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参数资料
| 型号： | R8C23 |
| 厂商： | Renesas Technology Corp. |
| 英文描述： | MCU |
| 中文描述： | 微控制器 |
| 文件页数： | 8/52页 |
| 文件大小： | 471K |
| 代理商： | R8C23 |
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R8C/22 Group, R8C/23 Group
1. Overview
Rev.1.10 Mar 16, 2007
REJ03B0097-0110
Page 8 of 48
1.6
Pin Functions
Table 1.5 lists the Pin Functions and Table 1.6 lists the Pin Name Information by Pin Number.
I: Input
O: Output
I/O: Input and output
Table 1.5
Pin Functions
Type
Symbol
I/O Type
I
Description
Power Supply Input
VCC
VSS
AVCC, AVSS
Apply 2.7 V to 5.5 V to the VCC pin. Apply 0 V to the
VSS pin.
Applies the power supply for the A/D converter. Connect
a capacitor between AVCC and AVSS.
Input “L” on this pin resets the MCU.
Connect this pin to VCC via a resistor.
These pins are provided for the XIN clock generation
circuit I/O. Connect a ceramic resonator or a crystal
oscillator between the XIN and XOUT pins. To use an
externally derived clock, input it to the XIN pin and leave
the XOUT pin open.
INT interrupt input pins.
INT0 Timer RD input pins.
INT1 Timer RA input pins.
Key input interrupt input pins.
Timer RA I/O pin.
Timer RA output pin.
Timer RB output pin.
Timer RD I/O ports.
Analog Power Supply
Input
Reset Input
MODE
XIN Clock Input
XIN Clock Output
I
RESET
MODE
XIN
XOUT
I
I
I
O
INT Interrupt Input
INT0 to INT3
I
Key Input Interrupt
Timer RA
KI0 to KI3
TRAIO
TRAO
TRBO
TRDIOA0, TRDIOA1,
TRDIOB0, TRDIOB1,
TRDIOC0, TRDIOC1,
TRDIOD0, TRDIOD1
TRDCLK
TREO
CLK0
RXD0, RXD1
TXD0, TXD1
SCL
SDA
SSI
SCS
SSCK
SSO
CRX0
CTX0
I
I/O
O
O
I/O
Timer RB
Timer RD
I
External clock input pin.
Divided clock output pin.
Transfer clock I/O pin.
Serial data input pins.
Serial data output pins.
Clock I/O pin.
Data I/O pin.
Data I/O pin.
Chip-select signal I/O pin.
Clock I/O pin.
Data I/O pin.
CAN data input pin.
CAN data output pin.
Reference voltage input pin to A/D converter.
Analog input pins to A/D converter.
CMOS I/O ports. Each port contains an input/output
select direction register, allowing each pin in that port to
be directed for input or output individually.
Any port set to input can select whether to use a pull-up
resistor or not by a program.
Timer RE
Serial Interface
O
I/O
I
O
I/O
I/O
I/O
I/O
I/O
I/O
I
O
I
I
I/O
I
2
C Bus Interface
Clock Synchronous
Serial I/O with Chip
Select
CAN Module
Reference Voltage Input VREF
A/D Converter
I/O Port
AN0 to AN11
P0_0 to P0_7,
P1_0 to P1_7,
P2_0 to P2_7,
P3_0, P3_1,
P3_3 to P3_5, P3_7,
P4_3 to P4_5,
P6_0 to P6_7
P4_2, P4_6, P4_7
Input Port
I
Input only ports.
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