
R01UH0218EJ0110 Rev.1.10
Page 2 of 664
Sep 12, 2011
R32C/142 Group and R32C/145 Group
1. Overview
1.1.2
Performance Overview
Table 1.1 and
Table 1.2 show the performance overview of the R32C/142 Group and R32C/145 Group.
Table 1.1
Performance Overview (1/2)
Unit
Function
Explanation
CPU
Central processing
unit
R32C/100 Series CPU Core
Basic instructions: 108
Minimum instruction execution time: 15.625 ns (f(CPU) = 64 MHz)
Multiplier: 32-bit × 32-bit
64-bit
Multiply-accumulate unit: 32-bit × 32-bit + 64-bit
64-bit
IEEE-754 compatible FPU: Single precision
32-bit barrel shifter
Operating mode: Single-chip mode
Memory
Flash memory: 256/512 Kbytes
RAM: 32 Kbytes
Data flash: 4 Kbytes × 2 blocks
Refer to Tables
1.3 and
1.4 for details
Clock
Clock generator
4 circuits (main clock, sub clock, PLL, on-chip oscillator)
Oscillation stop detector: Main clock oscillator stop/restart detection
Frequency divide circuit: Divide-by-2 to divide-by-24 selectable
Low power modes: Wait mode, stop mode
Interrupts
Interrupt vectors: 261
External interrupt inputs:
NMI, INT × 6, key input × 4
Interrupt priority levels: 7
Watchdog Timer
15 bits × 1 (selectable input frequency from prescaler output)
Automatic timer start function is available
DMA
DMAC
4 channels
Cycle-steal transfer mode
Request sources: 45
2 transfer modes: Single transfer, repeat transfer
DMAC II
Can be activated by any peripheral interrupt source
3 transfer functions: Immediate data transfer, calculation transfer,
chained transfer
I/O Ports
Programmable I/O
ports
2 input-only ports
84 CMOS I/O ports
A pull-up resistor is selectable for every 4 input ports
Timer
Timer A
16-bit timer × 5
Timer mode, event counter mode, one-shot timer mode, pulse-width
modulation (PWM) mode
Two-phase pulse signal processing in event counter mode (two-
phase encoder input) × 3
Timer B
16-bit timer × 6
Timer mode, event counter mode, pulse frequency measurement
mode, pulse-width measurement mode
Three-phase motor
control timer
Three-phase motor control timer × 1 (timers A1, A2, A4, and B2 used)
8-bit programmable dead time timer