R8C/35C Group
1. Overview
REJ03B0283-0001 Rev.0.01 Sep. 01, 2009
Under development Preliminary specification
Specifications in this manual are tentative and subject to change.
1.1.2
Specifications
Tables
1.1 and
1.2 outline the Specifications for R8C/35C Group.
Table 1.1
Specifications for R8C/35C Group (1)
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
Refer to Table 1.3 Product List for R8C/35C Group.
Power Supply
Voltage
Detection
Voltage detection
circuit
Power-on reset
Voltage detection 3 (detection level of voltage detection 0 and voltage
detection 1 selectable)
I/O Ports
Programmable I/O
ports
Input-only: 1 pin
CMOS I/O ports: 47, selectable pull-up resistor
High current drive ports: 47
Clock
Clock generation
circuits
4 circuits: XIN clock oscillation circuit,
XCIN clock oscillation circuit (32 kHz),
High-speed on-chip oscillator (with frequency adjustment function),
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, high-speed
on-chip oscillator, low-speed on-chip oscillator), wait mode, stop mode
Real-time clock (timer RE)
Interrupts
Number of interrupt vectors: 69
External Interrupt: 9 (INT × 5, Key input × 4)
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: 33
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 RD
16 bits × 2 (with 4 capture/compare registers)
Timer mode (input capture function, output compare function), PWM mode
(output 6 pins), reset synchronous PWM mode (output three-phase
waveforms (6 pins), sawtooth wave modulation), complementary PWM mode
(output three-phase waveforms (6 pins), triangular wave modulation), PWM3
mode (PWM output 2 pins with fixed period)
Timer RE
8 bits × 1
Real-time clock mode (count seconds, minutes, hours, days of week), output
compare mode