參數(shù)資料
型號： R5F21112FP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP32
封裝： 7 X 7 MM, 0.80 MM PITCH, PLASTIC, LQFP-32
文件頁數(shù)： 31/32頁
文件大小： 343K
代理商： R5F21112FP
Rev.1.60
Jan 27, 2006
page 6 of 26
REJ03B0034-0160
R8C/11 Group
1. Overview
Signal name
Pin name
I/O type
Power supply
Vcc,
I
input
Vss
IVcc
O
Analog power
AVcc, AVss
I
supply input
Reset input
___________
RESET
I
CNVss
I
MODE
I
Main clock input
XIN
I
Main clock output XOUT
O
_____
INT interrupt input
_______
INT0 to INT3
I
Key input interrupt
_____
KI0 to KI3
I
Timer X
CNTR0
I/O
____________
CNTR0
O
Timer Y
CNTR1
I/O
Timer Z
TZOUT
O
Timer C
TCIN
I
CMP00 to CMP02, O
CMP10 to CMP12
Serial interface
CLK0
I/O
RxD0, RxD1
I
TxD0, TxD10,O
TxD11
Reference voltage VREF
I
input
A/D converter
AN0 to AN11
I
I/O port
P00 to P07,
I/O
P10 to P17,
P30 to P33, P37,
P45
Input port
P46, P47
I
Function
Apply 2.7 V to 5.5 V to the Vcc pin. Apply 0 V to the
Vss pin.
This pin is to stabilize internal power supply.
Connect this pin to Vss via a capacitor (0.1
F).
Do not connect to Vcc.
Power supply input pins for A/D converter. Connect the
AVcc pin to Vcc. Connect the AVss pin to Vss. Connect a
capacitor between pins AVcc and AVss.
Input “L” on this pin resets the MCU.
Connect this pin to Vss via a resistor.
Connect this pin to Vcc via a resistor.
These pins are provided for the main clock generat-
ing circuit I/O. Connect a ceramic resonator or a crys-
tal 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.
Key input interrupt pins.
Timer X I/O pin
Timer X output pin
Timer Y I/O pin
Timer Z output pin
Timer C input pin
Timer C output pins
Transfer clock I/O pin.
Serial data input pins.
Serial data output pins.
Reference voltage input pin for A/D converter. Con-
nect the VREF pin to Vcc.
Analog input pins for A/D converter
These are 8-bit CMOS I/O ports. Each port has 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.
P10 to P17 also function as LED drive ports.
Port for input-only
1.6 Pin Description
Table 1.3 shows the pin description
Table 1.3 Pin description
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相關代理商/技術參數(shù)
參數(shù)描述
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