参数资料
型号: R5F21355DDFP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP52
封装: 10 X 10 MM, 0.65 MM, PLASTIC, LQFP-52
文件页数: 42/46页
文件大小: 417K
代理商: R5F21355DDFP
R8C/35D Group
1. Overview
REJ03B0286-0100 Rev.1.00
Page 5 of 43
Mar 26, 2010
1.3
Block Diagram
Figure 1.2
Block Diagram
R8C CPU core
System clock generation
circuit
XIN-XOUT
High-speed on-chip oscillator
Low-speed on-chip oscillator
XCIN-XCOUT
Memory
ROM (1)
RAM (2)
Multiplier
R0H
R0L
R1H
R2
R3
R1L
A0
A1
FB
SB
USP
ISP
INTB
PC
FLG
I/O ports
Notes:
1. ROM size varies with MCU type.
2. RAM size varies with MCU type.
8
Port P1
8
Port P3
5
1
Port P4
8
Port P0
8
Port P2
2
Port P5
Timers
Timer RA (8 bits
× 1)
Timer RB (8 bits
× 1)
Timer RC (16 bits
× 1)
Timer RE (8 bits
× 1)
UART or
clock synchronous serial I/O
(8 bits
× 2)
Peripheral functions
Watchdog timer
(14 bits)
A/D converter
(10 bits
× 12 channels)
Voltage detection circuit
Comparator B
8
Port P6
Low-speed on-chip oscillator
for watchdog timer
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