參數(shù)資料
型號: R5F212L4SDFP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP32
封裝: 7 X 7 MM, 0.80 MM PITCH, PLASTIC, LQFP-32
文件頁數(shù): 5/37頁
文件大?。?/td> 379K
代理商: R5F212L4SDFP
R8C/2K Group, R8C/2L Group
1. Overview
Rev.1.10
Dec 21, 2007
Page 11 of 45
REJ03B0219-0110
1.5
Pin Functions
Table 1.8 lists Pin Functions.
I: Input
O: Output
I/O: Input and output
NOTE:
1. Refer to the oscillator manufacturer for oscillation characteristics.
Table 1.8
Pin Functions
Item
Pin Name
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.
Analog power
supply input
AVCC, AVSS
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 XIN clock generation circuit I/O.
Connect a ceramic resonator or a crystal oscillator between
the XIN and XOUT pins(1). To use an external clock, input it to
the XIN pin and leave the XOUT pin open.
XIN clock output
XOUT
O
INT interrupt input
INT0, INT1, INT3
I
INT interrupt input pins.
INT0 is timer RB, timer RC and timer RD input pins.
Key input interrupt
KI0 to KI3
I
Key input interrupt input pins
Timer RA
TRAIO
I/O
Timer RA I/O pin
Timer RB
TRBO
O
Timer RB output pin
Timer RC
TRCCLK
I
External clock input pin
TRCTRG
I
External trigger input pin
TRCIOA, TRCIOB,
TRCIOC, TRCIOD
I/O
Timer RC I/O pins
Timer RD
TRDIOA0, TRDIOA1,
TRDIOB0, TRDIOB1,
TRDIOC0, TRDIOC1,
TRDIOD0, TRDIOD1
I/O
Timer RD I/O pins
TRDCLK
I
External clock input pin
Serial interface
CLK0, CLK2
I/O
Transfer clock I/O pins
RXD0, RXD2
I
Serial data input pins
TXD0, TXD2
O
Serial data output pins
Reference voltage
input
VREF
I
Reference voltage input pin to A/D converter
A/D converter
AN2, AN4 to AN11
I
Analog input pins to A/D converter
I/O port
P0_0 to P0_3, P0_5,
P1_0 to P1_7,
P2_0 to P2_7,
P3_3 to P3_5,
P4_5,
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.
P2_0 to P2_7 also function as LED drive ports.
Input port
P4_2, P4_6, P4_7
I
Input-only ports
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