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1. Overview
1.1.2
Specifications
Table 1.1
Specifications (144-Pin Package) (1/2)
Item
Function
Specification
CPU
Central processing
unit
M32C/80 core (multiplier: 16 bits × 16 bits
→ 32 bits
multiply-addition operation instructions: 16 × 16 + 48
→ 48 bits)
Basic instructions: 108
Minimum instruction execution time:
31.3 ns (f(CPU) = 32 MHz, VCC1 = 4.2 to 5.5 V)
41.7 ns (f(CPU) = 24 MHz, VCC1 = 3.0 to 5.5 V)
Operating modes: Single-chip mode, memory expansion mode,
and microprocessor mode
Memory
ROM, RAM, data
flash
See Tables 1.5 to 1.7 Product List.
Power Supply Voltage Detection
Vdet3 detection function, Vdet4 detection function,
cold start/warm start determination function
External Bus
Expansion
Bus/memory
expansion function
Address space: 16 Mbytes
External bus interface: 1 to 7 wait states can be inserted,
4 chip select outputs, 3 V and 5 V interfaces
Bus format: Switchable between separate bus and multiplexed
bus formats, switchable data bus width (8-bit or 16-bit)
Clock
Clock generation
circuits
4 circuits:
Main clock, sub clock, on-chip oscillator,
PLL frequency synthesizer
Oscillation stop detection:
Main clock oscillation stop detection function
Frequency divider circuit:
Dividing ratio selectable among 1, 2, 3, 4, 6, 8, 10, 12, 14, 16
Low power consumption features: Wait mode, stop mode
Interrupts
Interrupt vectors: 70
External interrupt inputs: 14 (NMI, INT × 9, key input × 4)
Interrupt priority levels: 7
Watchdog Timer
15-bit × 1 channel (with prescaler)
DMA
DMAC
4 channels, cycle steal method
Trigger sources: 43
Transfer modes: 2 (single transfer and repeat transfer)
DMACII
Can be activated by all peripheral function interrupt sources
Transfer modes: 2 (single transfer and burst transfer)
Immediate transfer, calculation transfer, and chain transfer
functions
Timer
Timer A
16-bit timer × 5
Timer mode, event counter mode, one-shot timer mode,
pulse width modulation (PWM) mode,
Event counter 2-phase pulse signal processing (2-phase
encoder input) × 3
Timer B
16-bit timer × 6
Timer mode, event counter mode, pulse period measurement
mode, pulse width measurement mode
Timer function for
3-phase motor
control
3-phase inverter control × 1 (using timer A1, timer A2, timer A4,
and timer B2)
On-chip dead time timer