R8C/33T Group 1. Overview
R01DS0046EJ0110 Rev.1.10 Page 2 of 47
Apr 26, 2011
1.1.2 Specifications
Tables 1.1 and 1.2 outline the Specifications for R8C/33T Group.
Table 1.1 Specifications for R8C/33T 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 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
• Operation mode: Single-chip mode (address space: 1 Mbyte)
Memory ROM, RAM,
Data flash
Refer to Table 1.3 Product List for R8C/33T 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: 27, selectable pull-up resistor
• High current drive ports: 27
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
• 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
Interrupts • Number of interrupt vectors: 69
• External Interrupt: 7 (INT
× 4, 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: 22
• 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)
