Table 1. Specifications for R8C/M11A Group
Item Function Specification
CPU Central processing unit R8C CPU core
  • Number of fundamental instructions: 89
  • Minimum instruction execution time:
    50 ns (f(XIN) = 20 MHz, VCC = 2.7 to 5.5 V)
    200 ns (f(XIN) = 5 MHz, VCC = 1.8 to 5.5 V)
  • Multiplier: 16 bits × 16 bits → 32 bits
  • Multiply-accumulate instruction: 16 bits × 16 bits + 32 bits → 32 bits
  • Operation mode: Single-chip mode (address space: 1 Mbyte)
Memory ROM, RAM, Data Flash See Product Lineup.
Reset Sources
  • Hardware reset by RESET
  • Power-on reset
  • Watchdog timer reset
  • Software reset
  • Reset by voltage detection 0
Voltage Detection Voltage detection circuit
Voltage detection with two check points:
Voltage detection 0, voltage detection 1 (detection level selectable)
Watchdog Timer
  • 14 bits × 1 (with prescaler)
  • Reset start selectable
  • Count source protection function selectable
Clock Clock generation circuits
  • 3 circuits:
    XIN clock oscillation circuit,
    High-speed On-chip oscillator (with frequency adjustment function),
    Low-speed On-chip oscillator
  • Oscillation stop detection: XIN clock oscillation stop detection function
  • Clock frequency divider circuit integrated
Power Control
  • Standard operating mode
  • Wait mode (CPU stopped, peripheral functions in operation)
  • Stop mode (CPU and peripheral functions stopped)
Interrupts
  • Number of interrupt vectors: 69
  • External interrupt: 6 (INT × 3, Key input × 3)
  • Priority levels: 2 levels
I/O Ports Programmable I/O ports
  • CMOS I/O ports: 11 (pull-up selectable)
  • High current drive ports: 5
Timer Timer RJ2
16 bits × 1
Timer mode, pulse output mode (output level inverted every period), event counter mode,
pulse width measurement mode, pulse period measurement mode
Timer RB2
8 bits × 1 (with 8-bit prescaler) or 16 bits × 1 (selectable)
Timer mode, programmable waveform generation mode (PWM output), programmable one-shot generation mode,
programmable wait one-shot generation mode
Timer RC
16 bits × 1 (with 4 capture/compare registers)
Timer mode (input capture function, output compare function), PWM mode (3 outputs), PWM2 mode (1 PWM output)
Serial Interface UART0 Clock synchronous serial I/O/UART I/O multiplexed
A/D Converter 10-bit resolution × 5 channels,
includes sample and hold function, with sweep mode
Comparator B 1 circuit
Flash Memory
  • Programming/erasure voltage for program ROM: VCC = 1.8 V to 5.5 V
  • Programming/erasure voltage for data flash: VCC = 1.8 V to 5.5 V
  • Programming and erasure endurance:
    10,000 times (data flash), 1,000 times (program ROM)
  • Program security: ID code check, protection enabled by lock bit
  • Debug functions: On-chip debug, on-board flash rewrite function
Operating Frequency/
Power Supply Voltage		 f(XIN) = 20 MHz (VCC = 2.7 to 5.5 V)
f(XIN) = 5 MHz (VCC = 1.8 to 5.5 V)
Temperature Range -20 to 85 degrees C (N version)
Package
14-pin TSSOP
Package code: PTSP0014JA-B
14-pin DIP
Package code: PRDP0014AC-A