R8C/28

MPU & MCU

R8C Family

R8C/2x

Performance Outline of R8C/28 Group

Item		Specification
CPU	Number of fundamental instructions	89 instructions
	Minimum instruction execution time	50 ns (f(XIN) = 20 MHz, VCC = 3.0 to 5.5 V) (other than K version) 62.5 ns (f(XIN) = 16 MHz, VCC = 3.0 to 5.5 V) (K version) 100 ns (f(XIN) = 10 MHz, VCC = 2.7 to 5.5 V) 200 ns (f(XIN) = 5 MHz, VCC = 2.2 to 5.5 V) (N, D version)
	Operating mode	Single-chip
	Address space	1 Mbyte
	Memory capacity	See Product Lineup.
Peripheral Functions	Ports	I/O ports: 13 pins, Input ports: 3 pins
	LED drive ports	I/O ports: 8 pins (N, D version)
	Timers	Timer RA: 8 bits × 1 channel Timer RB: 8 bits × 1 channel (Each timer equipped with 8-bit prescaler) Timer RC: 16 bits × 1 channel (Input capture and output compare circuits) Timer RE: With real-time clock and compare match function (For J, K version, compare match function only.)
	Serial interfaces	1 channel (UART0): Clock synchronous serial I/O, UART 1 channel (UART1): UART
	Clock synchronous serial interface	1 channel I²C bus interface (1) Clock synchronous serial I/O with chip select
	LIN module	Hardware LIN: 1 channel (timer RA, UART0)
	A/D converter	10-bit A/D converter: 1 circuit, 4 channels
	Watchdog timer	15 bits × 1 channel (with prescaler) Reset start selectable
	Interrupts	Internal: 15 sources (N, D version), Internal: 14 sources (J, K version) External: 4 sources, Software: 4 sources, Priority levels: 7 levels
	Clock generation circuits	3 circuits • XIN clock generation circuit (with on-chip feedback resistor) • On-chip oscillator (high speed, low speed) High-speed on-chip oscillator has a frequency adjustment function. • XCIN clock generation circuit (32kHz) (N, D version) • Real-time clock (timer RE) (N, D version)
	Oscillation sop detection function	XIN clock oscillation stop detection function
	Voltage detection circuit	On-chip
	Power-on reset circuit	On-chip
Electrical Characteristics	Supply voltage	VCC = 3.0 to 5.5 V (f(XIN) = 20MHz) (other than K version) VCC = 3.0 to 5.5 V (f(XIN) = 16 MHz) (K version) VCC = 2.7 to 5.5 V (f(XIN) = 10 MHz) VCC = 2.2 to 5.5 V (f(XIN) = 5 MHz) (N, D version)
Electrical Characteristics	Current consumption (N, D version)	Typ. 10 mA (VCC = 5.0 V, f(XIN) = 20 MHz) Typ. 6 mA (VCC = 3.0 V, f(XIN) = 10 MHz) Typ. 2.0 µA (VCC = 3.0 V, wait mode (f(XCIN) = 32 kHz) Typ. 0.7 µA (VCC = 3.0 V, stop mode)
Flash Memory	Programming and erasure voltage	VCC = 2.7 to 5.5 V
Flash Memory	Programming and erasure endurance	100 times
Operating Ambient Temperature		−20 to 85 degrees C (N version) −40 to 85 degrees C (D, J version) (2) −40 to 125 degrees C (K version) (2)
Package		20-pin molded-plastic LSSOP

Notes:
1. I²C bus is a trademark of Koninklijke Philips Electronics N.V.
2. Specify the D, K version if D, K version functions are to be used.