参数资料
型号: R5F212G5SNFP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP32
封装: 7 X 7 MM, 0.80 MM PITCH, PLASTIC, LQFP-32
文件页数: 41/43页
文件大小: 323K
代理商: R5F212G5SNFP
R8C/2G Group
1. Overview
Rev.1.00
Apr 04, 2008
Page 7 of 41
REJ03B0223-0100
1.5
Pin Functions
I: Input
O: Output
I/O: Input and output
NOTE:
1. Refer to the oscillator manufacturer for oscillation characteristics.
Table 1.4
Pin Functions
Type
Symbol
I/O Type
Description
Power supply input
VCC, VSS
Apply 2.2 V to 5.5 V to the VCC pin. Apply 0 V to the VSS pin.
Reset input
RESET
I
Input “L” on this pin resets the MCU.
MODE
I
Connect this pin to VCC via a resistor.
XCIN clock input
XCIN
I
These pins are provided for XCIN clock generation circuit I/O.
Connect a crystal oscillator between the XCIN and XCOUT
pins.(1) To use an external clock, input it to the XCIN pin and
leave the XCOUT pin open.
XCIN clock output
XCOUT
O
INT interrupt input
INT0 to INT2, INT4
IINT interrupt input pins
Key input interrupt
KI0 to KI3
I
Key input interrupt input pins
Timer RA
TRAIO
I/O
Timer RA I/O pin
TRAO
O
Timer RA output pin
Timer RB
TRBO
O
Timer RB output pin
Timer RE
TREO
O
Divided clock output pin
Timer RF
TRFI
I
Timer RF input pin
TRFO00 to TRFO02,
TRFO10 to TRFO12
O
Timer RF output pins
Serial interface
CLK0, CLK2
I/O
Clock I/O pin
RXD0, RXD2
I
Serial data input pin
TXD0, TXD2
O
Serial data output pin
Comparator
VCMP1, VCMP2
I
Analog input pins to comparator
CVREF
I
Reference voltage input pin to comparator
VCOUT1, VCOUT2
O
Comparator output pins
I/O port
P0_4 to P0_7,
P1_0 to P1_7,
P3_0 to P3_7,
P4_3, P4_5,
P6_0, P6_3 to P6_6
I/O
CMOS I/O ports. Each port has an I/O select direction
register, allowing each pin in the port to be directed for input
or output individually.
Any port set to input can be set to use a pull-up resistor or not
by a program.
Output port
P4_4
O
Output-only port
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