参数资料
型号: R5F2120CJFP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP48
封装: 7 X 7 MM, 0.50 MM PITCH, PLASTIC, LQFP-48
文件页数: 2/47页
文件大小: 432K
代理商: R5F2120CJFP
R8C/20 Group, R8C/21 Group
1. Overview
Rev.2.00 Aug 27, 2008
Page 8 of 41
REJ03B0120-0200
1.6
Pin Functions
I: Input
O: Output
I/O: Input and output
Table 1.5
Pin Functions
Type
Symbol
I/O Type
Description
Power Supply Input
VCC
VSS
I
Apply 2.7 V to 5.5 V to the VCC pin. Apply 0 V to the
VSS pin.
Analog Power Supply
Input
AVCC, AVSS
I
Applies the power supply for the A/D converter. Connect
a capacitor between AVCC and AVSS.
Reset Input
RESET
I
Input “L” on this pin resets the MCU.
MODE
I
Connect this pin to VCC via a resistor.
XIN Clock Input
XIN
I
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.
XIN Clock Output
XOUT
O
INT Interrupt Input
INT0 to INT3
IINT interrupt input pins.
INT0 Timer RD input pins.
INT1 Timer RA 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 RD
TRDIOA0, TRDIOA1,
TRDIOB0, TRDIOB1,
TRDIOC0, TRDIOC1,
TRDIOD0, TRDIOD1
I/O
Timer RD I/O ports.
TRDCLK
I
External clock input pin.
Timer RE
TREO
O
Divided clock output pin.
Serial Interface
CLK0
I/O
Transfer clock I/O pin.
RXD0, RXD1
I
Serial data input pins.
TXD0, TXD1
O
Serial data output pins.
I2C Bus Interface
SCL
I/O
Clock I/O pin.
SDA
I/O
Data I/O pin.
Clock Synchronous
Serial I/O with Chip
Select
SSI
I/O
Data I/O pin.
SCS
I/O
Chip-select signal I/O pin.
SSCK
I/O
Clock I/O pin.
SSO
I/O
Data I/O pin.
Reference Voltage Input VREF
I
Reference voltage input pin to A/D converter.
A/D Converter
AN0 to AN11
I
Analog input pins to A/D converter.
I/O Port
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
I/O
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.
Input Port
P4_2, P4_6, P4_7
I
Input only ports.
相关PDF资料
PDF描述
R5F2120CKFP 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP48
R5F2121AKFP 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP48
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R5F2121AKFP 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP48
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