R8C/3MQ Group 1. Overview
R01DS0044EJ0200 Rev.2.00 Page 2 of 47
Jun 29, 2012
1.1.2 Specifications
Tables 1.1 and 1.2 outline the Specifications for R8C/3MQ Group.
Table 1.1 Specifications for R8C/3MQ Group (1)
Item Function Specification
CPU Central processing
unit
R8C CPU core
• Number of fundamental instructions: 89
• Minimum instruction execution time:
62.5 ns (f(BCLK) = 16 MHz, VCC = 2.7 to 3.6 V)
125 ns (f(BCLK) = 8 MHz, VCC = 2.15 to 3.6 V)
250 ns (f(BCLK) = 4 MHz, VCC = 1.8 to 3.6 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
Refer to Table 1.4 Product List for R8C/3MQ Group.
Power Supply
Voltage
Detection
Voltage detection
circuit
• Power-on reset
• Voltage detection 2 (detection level selectable)
I/O Ports Programmable I/O
ports
CMOS I/O ports: 18 (including XCIN and XCOUT), selectable pull-up resistor
(for some ports)
Clock Clock generation
circuits
• 3 circuits: XIN clock oscillation circuit,
XCIN clock oscillation circuit (32 kHz),
Low-speed on-chip oscillator
• Oscillation stop detection: XIN clock oscillation stop detection function
• Frequency divider circuit: Dividing selectable 1, 2, 4, 8, and 16
• Low power consumption modes:
Standard operating mode (high-speed clock, low-speed clock, low-speed
on-chip oscillator), wait mode, stop mode
Real-time clock (timer RE)
Interrupts • Interrupt Vectors: 69
• External: 11 sources (INT
× 3, key input × 8)
• Priority levels: 7 levels
Watchdog Timer • 14 bits × 1 (with prescaler)
• Reset start selectable
• Low-speed on-chip oscillator for watchdog timer selectable
DTC (Data Transfer Controller) • 1 channel
• Activation sources: 17
• Transfer modes: 2 (normal mode, repeat mode)
Timer Timer RA 8 bits × 1 (with 8-bit prescaler)
Timer mode (period timer), pulse output mode (output level inverted every
period), event counter mode, pulse width measurement mode, pulse period
measurement mode
Timer RB 8 bits × 1 (with 8-bit prescaler)
Timer mode (period timer), 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
(output 3 pins), PWM2 mode (PWM output pin)
Timer RE 8 bits × 1
Real-time clock mode (count seconds, minutes, hours, days of week), output
compare mode
