参数资料
型号: R5F21144SP
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PDSO20
封装: 4.40 X 6.50 MM, 0.65 MM PITCH, PLASTIC, LSSOP-20
文件页数: 2/42页
文件大小: 664K
代理商: R5F21144SP
Rev.2.00
Jan 30, 2006
Page 8 of 37
REJ03B0102-0200
R8C/14 Group, R8C/15 Group
1. Overview
1.6
Pin Description
I: Input
O: Output
I/O: Input and output
Table 1.5
Pin Description
Function
Pin name
I/O type
Description
Power Supply Input
VCC
VSS
I
Apply 2.7V to 5.5V to the VCC pin. Apply 0V to
the VSS pin
Analog Power Supply
Input
AVCC
AVSS
I
Power supply input pins to A/D converter.
Connect AVCC to VCC. Apply 0V to AVSS.
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
Main Clock Input
XIN
I
These pins are provided for the main 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.
Main Clock Output
XOUT
O
INT Interrupt
INT0, INT1, INT3
I
INT interrupt input pins
Key Input Interrupt
KI0 to KI3
I
Key input interrupt input pins
Timer X
CNTR0
I/O
Timer X I/O pin
CNTR0
O
Timer X output pin.
Timer Z
TZOUT
O
Timer Z output pin
Timer C
TCIN
I
Timer C input pin
CMP0_0 to CMP0_2,
CMP1_0 to CMP1_2
O
Timer C output pins.
Serial Interface
CLK0
I/O
Transfer clock I/O pin.
RXD0
I
Serial data input pin.
TXD0
O
Serial data output pin.
SSU
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
Connect VREF to VCC
A/D Converter
AN8 to AN11
I
Analog input pins to A/D converter
I/O Port
P1_0 to P1_7, P3_3
to P3_5, P3_7, P4_5
I/O
These are CMOS I/O ports. Each port contains
an I/O 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 program.
P1_0 to P1_3 also function as LED drive ports.
Input Port
P4_6, P4_7
I
Port for input-only
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相关代理商/技术参数
参数描述
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R5F21152SP 制造商:Renesas Electronics Corporation 功能描述: