Datasheet

R8C/M11A Group, R8C/M12A Group 1. Overview
R01DS0010EJ0200 Rev.2.00 Page 4 of 45
May 31, 2012
1.1.3 Specifications
Tables 1.3 and 1.4 outline the Specifications.
Table 1.3 Specifications (1)
Item Function Description
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 V to 5.5 V)
200 ns (f(XIN) = 5 MHz, VCC = 1.8 V to 5.5 V)
• Multiplier: 16 bits × 16 bits → 32 bits
• Multiply-accumulate instruction: 16 bits × 16 bits + 32 bits → 32 bits
• Operating mode: Single-chip mode (address space: 1 Mbyte)
Memory ROM, RAM,
data flash
See Table 1.5 Product List.
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 levels selectable)
Watchdog timer • 14 bits × 1 (with prescaler)
• Reset start function selectable
• Count source protection function selectable
• Periodic timer 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 inputs: 8 (INT
× 4, key input × 4)
• Priority levels: 2
I/O ports Programmable I/O
ports
• CMOS I/O: 17 (pull-up resistor selectable)
• High-current drive ports: 8
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 (output compare function, input capture function),
PWM mode (3 outputs), PWM2 mode (1 PWM output)
Serial
interface
UART0 Clock synchronous serial I/O. Also used for asynchronous serial I/O.
A/D converter • Resolution: 10 bits × 6 channels
• Sample and hold function, sweep mode
Comparator B 2 circuits