M32C/80

Technical Update

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ALL (42)
Device (34)
Others (8)

Device(34)

Document Title	Doc Number (Previous Number)	Issue Date Revision	Classification of Information	Size(KB)	Product Name	Remarks
M32C/84 Group M32C/85 Group M32C/86 Group M32C/87 Group M32C/88 Group Usage Precaution for the WAIT Instruction When entering wait mode from low-power consumption mode, if an interrupt request, which is used to exitwait mode, is acknowledged while the WAIT instruction is being executed, then the CPU may run out of control	TN-16C-A168A/E	Apr.02.08 Rev.1.00	Technical Notification	109	List	-
M32C/87 Group Document Revision for UART5 and UART6 in Serial interfaces (Serial I/O) The description of the U5C0 register (UART5 Transmit/Receive Control Register 0) and the U6C0 register (UART6Transmit/Receive Control Register 0) has been revised.When using the subject document, please pay attention to the changes.	TN-16C-A163A/E	Feb.26.07 Rev.1.00	Technical Notification	147	List	-
M16C/80 Series M32C/80 Series Usage Precaution for Clock synchronous serial I/O mode in Serial interfaces (Serial I/O) In clock synchronous serial I/O mode, unintended data reception may be started if continuous receive mode is enabled.	TN-16C-A162A/E	Feb.16.07 Rev.1.00	Technical Notification	18	List	-
M32C/81 M32C/82 and M32C/83 Groups:Usage Precaution for fC32 When the main clock is used as a CPU clock source and fC32 as a count source for timers A and B, fC32 clockcycles may become shorter because of the indeterminate supply voltage and noise. As a consequence, timers Aand B whose count source is fC32 may increase counting speed.	TN-16C-A155A/E	Jul.20.06 Rev.1.00	Technical Notification	90	List	-
M16C/70 Series M16C/80 Series M32C/80 Series M32C/90 Series : Usage Precaution for String Instruction Product-sum Operation Instruction Since an interrupt is disabled, the interrupt-cancelled state occurs. Then the interrupt is acknowledged, and the string instructions or product-sum operation instruction is executed immediately after the acknowledgement. In this case, these instructions will be aborted.	TN-16C-A157A/E	Jun.08.06 Rev.1.00	Technical Notification	45	List	-
M32C/80 Series M32C/90 Series : Usage precation for MUL.W Instruction MULU.W Instruction If the instruction, MUL.W or MULU.W and the memory for dest are used, the calculation result is 32-bit wide. Then, incorrect results are stored into the 16 high-order bits and also the next instructions are not executed as they are supposed to.	TN-16C-A156A/E	Jun.06.06 Rev.1.00	Technical Notification	26	List	-
M32C/80 Series Document Revision for Intelligent I/O Clock Asynchronous Serial I/O Mode (UART) Correction of User's Manual	TN-16C-A151A/E	Apr.26.06 Rev.1.00	Technical Notification	108	List	-
M16C Family Precautions Concerning External Trigger Input in One-Shot Timer Mode of Timer A When an external trigger input is used to start counting in one-shot timer mode of the timer A, another external trigger input during counting reloads a counter value and the timer continues counting. However, if another external trigger input is provided immediately before the counter reaches 0000h, the timer may stop counting.	TN-16C-125A/EA	Sep.16.04 Rev.1.00	Technical Notification	144	List	-
M16C Family Precautions when Using Single-Sweep Mode of the A/D Converter When setting the ADST bit to 0 in single-sweep mode of A/D converter during A/D conversion and aborting A/D conversion, an A/D conversion interrupt may be generated.	TN-16C-132A/EA	Sep.01.04 Rev.1.00	Technical Notification	98	List	-
M16C Family Precautions when Using Serial Interface Special Mode 1 (I2C mode) When setting each condition generate bit (STAREQ, RSTAREQ and STPREQ) from 0 to 1 within half cycle of the transfer clock after setting the STSPSEL bit to 0, each condition may not be generated accurately.	TN-16C-130A/EA	Sep.01.04 Rev.1.00	Technical Notification	94	List	-
M16C Family Precaution Concerning Exiting from Stop Mode SCLL sync output enable is available in I2C bus interface mode only.	TN-16C-124A/EA	Sep.01.04 Rev.1.00	Technical Notification	162	List	-
M32C/80 Series Precautions When Canceling CAN Remote Frame Transmission/Reception Process flow when aborting remote frame transmission or canceling remote frame reception.	TN-16C-126A/EA	Aug.06.04 Rev.1.00	Technical Notification	88	List	-
M32C/80 Series and M16C/80 Group Precaution Concerning Using NMI interrupt for Recovery from Stop Mode After exiting from stop mode using the NMI interrupt, the microcomputer may not enter stop mode by setting the CM10 bit, all-clock stop bit, in the CM1 register to 1 (stop mode).	TN-16C-127A/EA	Aug.01.04 Rev.1.00	Technical Notification	33	List	-
M16C Family Precautions When Using Sub Clock When using the sub clock (XCIN-XCOUT) as the CPU clock (BCLK) or as the timer count source, DO NOT leave the CM03 bit set to 1 (XCIN-XCOUT drive capacity HIGH ).	TN-16C-119A/EA	Jan.05.04 Rev.1.00	Technical Notification	63	List	-
Replace Sheets of Technical News No. M16C-115-0311 M16C/62P Precautions When Supplying Power to Microcomputer (Explanation of Addition in M16C/62 Group (M16C/62P) Data Sheet) If the power supply gradient before power applied to the VCC1 pin reached 2.7V does not meet the SVcc conditions, the microcomputer may malfunction.	TN-M16C-116-0311	Nov.11.03 Rev.1.00	Technical Notification	509	List	-
M32C/81 Group, M32C/82 Group and M32C/83 Group Precautions Concerning the UiC1 (i=0 to 4) Register The UiERE bit in the UiC1 register may be set to 1 depending on the CLKi and CTSi pin states, and the UiMR register setting.	TN-M16C-104-0310	Oct.01.03 Rev.1.00	Technical Notification	21	List	-
M16C/62P, M16C/26 and M16C/6K9 Precautions when using an External Clock as the Main Clock Program may not operate correctly if an external clock, connected to the XIN pin while the main clock is selected as the CPU clock, is turned off temporarily and then restarted.	TN-M16C-109-0309	Sep.16.03 Rev.1.00	Technical Notification	73	List	-
M16C/62P Group and M16C/26 Group Precautions when using Programmable I/O Ports The input threshold differs for each input pin that shares inputs with other peripherals.	TN-M16C-102-0309	Sep.16.03 Rev.1.00	Technical Notification	117	List	-
M32C/81, M32C/82 and M32C/83 groups Precaution on the DMAII Bit in the RLVL Register If a hardware reset occurs while the INT0IC register or the RLVL register is being read, set the interrupt control register after setting the DMAII bit in the RLVL register to 0.	TN-M16C-98-0308	Aug.01.03 Rev.1.00	Technical Notification	20	List	-
M32C/80 series and M16C/80 group Precaution on Stop Mode The microcomputer may not enter stop mode with a certain condition.	TN-M16C-97-0307	Jul.01.03 Rev.1.00	Technical Notification	26	List	-
Precaution for the Use of the Three-Phase Motor Control Timer Functions Set the Value in the TAi-1 register, then rewrite the same value in the TAi-1 register after one cycle of the timer Ai count source has elapsed.	TN-M16C-95-0304	Apr.01.03 Rev.1.00	Technical Notification	20	List	-
M32C/80 Series Cautions for Using DMAC When using the DMAC of the M32C/80 series, if the DCTi (DMAi transfer count) register of channel i is set to '1', ensure that a DMA request for channel i is not generated when the DMA of the channel i is being enabled.	TN-M16C-88-0209	Sep.01.02 Rev.1.00	Technical Notification	9	List	-
M16C/80, M32C/82 and M32C/83 Groups Usage Precaution on Three-phase Motor Control Timer's Function While using the timers in Three-Phase Mode 1 and near Timer B2's overflow, if a count value is written to Timer Ai-1 register, a different count value may be written to Timer Ai instead of the value you want to set it to.	TN-M16C-86-0205	May.16.02 Rev.1.00	Technical Notification	14	List	-
M16C Family Usage Precautions when Clearing Interrupt Request Bit When clearing an interrupt request bit of the interrupt control register, depending on the instruction used, an interrupt request bit may not get cleared.	TN-M16C-85-0204	Apr.01.02 Rev.1.00	Technical Notification	24	List	-
CAN transceiver control method with boot mode When writing in the internal flash memory via CAN in boot mode, set the mode of CAN transceiver as high-speed mode or normal operation mode.	TN-M16C-82-0201	Jan.16.02 Rev.1.00	Technical Notification	40	List	-
Corrections and Supplementary Explanation for M16C/20 Series, M16C/60 Series, M16C/80 Series Data Sheet and User's Manual A few corrections and supplementary explanation for the M16C/20 series, M16C/60 series, M16C/80 series User's Manual.	TN-M16C-75-0110	Oct.16.01 Rev.1.00	Technical Notification	17	List	-
Setting procedure of processor mode bits Do not change the processor mode bits simultaneously with other bits when changing the processor mode bits 01 or 11. Change the processor mode bits after changing the other bits.	TN-M16C-71-0105	May.16.01 Rev.1.00	Technical Notification	17	List	-
Supplemental Description for WAIT Peripheral Function Clock Stop Bit When the MCU running in low-speed or low power dissipation mode, do not enter WAIT peripheral function clock stop bit set to 1.	TN-M16C-69-0104	Apr.16.01 Rev.1.00	Technical Notification	47	List	-
M16C/80 Group Precautions for Using HOLD Signal Although the HOLD pin may be held L P40 to P47 and P50 to P52 will not become high-impedance ports.	TN-M16C-59-0008	Aug.01.00 Rev.1.00	Technical Notification	11	List	-
M16C/80 Series, M16C/60 Series Cautions for Using Memory Expansion Mode or Microprocessor Mode Concerning the pins which function as address bus, data bus, or CS, WR, RD, etc. Set the corresponding port register and direction register after shifting to single-chip mode.	TN-M16C-49-0004	Apr.01.00 Rev.1.00	Technical Notification	8	List	-
M16C/80 Group Cautions for Using DMA There is a possibility that the DMAC will execute 2 transfers upon receiving only 1 DMA request or control of the MCU may be lost dpending on timing.	TN-M16C-44-0001	Jan.16.00 Rev.1.00	Technical Notification	18	List	-
M16C/62 Group Flash Memory Versions Precautions for Standard Serial I/O mode Apply a pull up resistor to NMI pin and disable interrupts when writing to M16C/62 Flash Memory Versions with Standard Serial I/O mode.	TN-M16C-21-9904	Apr.01.99 Rev.1.00	Technical Notification	12	List	-
Note on dedicated input pin of the M16C/60 series MCU When two or more different power sources are supplied to the system, if the input voltage of the unused dedicated input pin is higher than a voltage of Vcc pin, do not connect the dedicated input pin directly to the power source. This will cau	TN-M16C-11-9710	Oct.01.97 Rev.1.00	Technical Notification	11	List	-
Note on using the A-D converter of the M16C/60 series MCU When the A-D register is read at the same time the A-D conversion results are being saved, a false value will be saved to the A-D register. This occurs when the divided main clock or sub-clock is used as the CPU internal clock.	TN-M16C-09-9705	May.16.97 Rev.1.00	Technical Notification	14	List	-

Others(8)

Document Title	Doc Number (Previous Number)	Issue Date Revision	Classification of Information	Size(KB)	Product Name	Remarks
Change of inner packing label Change of inner packing label	TN-WRP-A014A/E	Jul.13.11 Rev.1.00	Packing Change	344	List	-
Change of the locking pin position in the magazine (P750PC) used for shipment Change of the locking pin position in the magazine (P750PC) used for shipment	TN-WRP-A013A/E	Nov.12.08 Rev.1.00	Packing Change	710	List	-
Change with the stable supply of trays Change with the stable supply of trays	TN-WRP-A012A/E	Sep.30.08 Rev.1.00	Packing Change	1129	List	-
Change of plastic reel of 330mm in diameter for embossed carrier tape (Standardization of plastic reel) Standardization of plastic reel of 330mm in diameter to that complying with the JEITA standards (so-called EIAJ reel).	TN-WRP-A010A/E	Mar.24.08 Rev.1.00	Packing Change	71	List	-
Change of content printed on the side of inner box We will unify the content printed on the inner box for IC trays for the purpose of standardizing our tray packaging specification.	TN-WRP-A009A/E	Jan.09.08 Rev.1.00	Packing Change	30	List	-
Addition of Shipping Tray Type for LQFP2020 Packages Tray forming die is added in response to the increasing production of LQFP2020 packages, and for through handling in manufacturing factories, new tray type name is adopted.	TN-WRP-A007A/E	Jun.07.07 Rev.1.00	Packing Change	136	List	-
Change of reel diameter of embossed carrier tape (330 mmf reel to 254 mmf reel) Change of reel diameter of embossed carrier tape(330 mmf reel to 254 mmf reel)	TN-WRP-A006A/E	Feb.14.07 Rev.1.00	Packing Change	309	List	-
Change of Carrier Tape Material *Change from polyvinyl chloride (PVC) to polystyrene (PS). The career tape material is changed from PVC to PS.	TN-WRP-A005A/E	Jul.05.06 Rev.1.00	Packing Change	32	List	-