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Item Specification
CPU
  • High-speed H8/300H CPU
  • Upward-compatible with H8/300 CPUs
  • General-register architecture : Sixteen 16-bit general registers also usable as sixteen 8-bit registers and eight 16-bit registers, or eight 32-bit registers.
  • Sixty-two basic instructions
  • Eight addressing modes
  • 64-Kbyte address space (H8/300H normal mode)
Interrupts
External interrupt sources 13 sources (IRQ4, IRQ3, IRQ1, IRQ0 , WKP7 to WKP0, IRQAEC)
Internal interrupt sources 9 sources
Clock pulse
generators
  • Two on-chip clock pulse generators
    • System clock pulse generator: 1.0 to 20MHz
    • Subclock pulse generator: 32.768 kHz
Power supply and
Operating frequency
  • Power supply and MCU operating frequency
    • With system clock oscillator (using external oscillator)*1
    • With on-chip oscillator*1

    • *1: 1/2 of fosc is supplied inside MCU as a System clock (f).
Power-down
modes
  • Seven power-down modes
    • Sleep (high-speed) mode
    • Sleep (medium-speed) mode
    • Standby mode
    • Watch mode
    • Subsleep mode
    • Subactive mode
    • Active (medium-speed) mode
Memory
(Memory map)
Group ROM [byte] RAM [byte]
H8/38524

32 kbytes
(Flash and Mask)

1 kbyte
H8/38523 24 kbytes
(Mask)
H8/38522 16 kbytes
(Flash and Mask)
H8/38521 12 kbytes
(Mask)
512 bytes
H8/38520 8 kbytes
(Mask)
I/O ports
I/O ports: 65pins I/O pins: 50pins
Output pins: 6pins
Input pins: 9pins
Timers
8-bit timer 4ch TimerA
  • Count-up timer with selection of eight internal clock signals divided from the system clock (f) and four clock signals divided from the watch clock (f w ).
TimerC
  • Count-up/down timer with selection of seven internal clock signals or event input from external pin
  • Auto-reloading
TimerG
  • Count-up timer with selection of four internal clock signals
  • Incorporates input capture function (built-in noise canceler)
Watchdog Timer
  • Reset signal generated by overflow of 8-bit counter
16-bit timer 2ch TimerF
  • Can be used as two independent 8-bit timers
  • Count-up timer with selection of four internal clock signals or event input from external pin
  • Provision for toggle output by means of compare-match function
Asynchronous external events
  • Count-up timer able to count asynchronous external events independently of the MCU's internal clocks
  • Asynchronous external events can be counted (both rising and falling edge detection possible)
Serial communication interface
SCI3 1ch SCI3: 8-bit synchronous/asynchronous serial interface incorporates multiprocessor communication function
10-bit PWM
  • Pulse-division PWM output for reduced ripple
    • Can be used as a 10-bit D/A converter by connecting to an external lowpass filter.
A/D converter
  • Successive approximations using a resistance ladder
    • 8-channel analog input pins
    • Conversion time: 31/f or 62/f per channel
LCD controller/driver
  • LCD controller/driver equipped with a maximum of 32 segment pins and four common pins
    • Choice of four duty cycles (static, 1/2, 1/3, or 1/4)
    • Segment pins can be switched to general-purpose port function in 4-bit units
Power-On Reset and Low-Voltage Detection Circuits
  • Monitors the power-supply voltage, and generates an internal reset signal when the voltage falls below a specified value.
    Uses an external capacitor to generate an internal reset signal when power is first supplied.
Product lineup
PKG type QFP (PTQP0080KC-A)
14 x 14 mm
0.65mm pitch
TQFP(PRQP0080JB-A)
12 x 12 mm
0.5mm pitch
Flash memory HD64F38524H
HD64F38522H
HD64F38524W
HD64F38522W
MASK HD6433852X(***)H HD6433852X(***)W
*X shows ROM size (0=8kbyte,1=12kbyte, 2=16kbyte, 3=24kbyte4=32kbyte)
(***) shows ROM code.

Sample and
Mass production


  WS MP
Flash OK OK
MASK - OK

 


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