Preliminary document
Specifications in this document are tentative and subject to change.
Under development
R8C/34W Group, R8C/34X Group, R8C/34Y Group, R8C/34Z Group
1. Overview
Table 1.5
Specifications for R8C/34Y Group (1)
Item
CPU
Function
Specification
Central processing R8C CPU core
unit
• Number of fundamental instructions: 89
• Minimum instruction execution time:
50 ns (f(XIN) = 20 MHz, VCC = 2.7 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)
Refer to Table 1.11 Product List for R8C/34Y Group.
Memory
ROM, RAM, Data
flash
Power Supply Voltage detection
• Power-on reset
Voltage
circuit
• Voltage detection 3 (detection level of voltage detection 1 selectable)
Detection
I/O Ports
Programmable I/O • Input-only: 1 pin
ports
Clock generation
circuits
• CMOS I/O ports: 43, selectable pull-up resistor
3 circuits: XIN clock oscillation circuit (with on-chip feedback resistor),
Clock
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, high-speed on-chip oscillator,
low-speed on-chip oscillator), wait mode, stop mode
• Interrupt vectors: 69
Interrupts
• External: 9 sources (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
• 1 channel
DTC (Data Transfer Controller)
• Activation sources: 31
• Transfer modes: 2 (normal mode, repeat mode)
Timer
Timer RA
Timer RB
8 bits (with 8-bit prescaler) × 1
Timer mode (period timer), pulse output mode (output level inverted every
period), event counter mode, pulse width measurement mode, pulse period
measurement mode
8 bits (with 8-bit prescaler) × 1
Timer mode (period timer), programmable waveform generation mode (PWM
output), programmable one-shot generation mode, programmable wait one-
shot generation mode
Timer RC
Timer RD
16 bits (with 4 capture/compare registers) × 1
Timer mode (input capture function, output compare function), PWM mode
(output 3 pins), PWM2 mode (PWM output pin)
16 bits (with 4 capture/compare registers) × 2
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
Output compare mode
REJ03B0312-0010 Rev.0.10
Apr 09, 2010
Page 6 of 67
RENESAS [ RENESAS TECHNOLOGY CORP ]
