參數(shù)資料
型號： R5F21114DFP
廠商： Renesas Technology Corp.
英文描述： SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
中文描述： 單片16位CMOS微機
文件頁數(shù)： 26/29頁
文件大小： 275K
代理商： R5F21114DFP
Rev.1.40
Sep 30, 2004
page 6 of 26
REJ03B0034-0140Z
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 CMP03, O
CMP10 to CMP13
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.
These are power supply input pins for A/D converter.
Connect the AVss pin to Vss. Connect a capacitor
between pins AVcc and AVss.
“L” on this input 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.
______
These are INT interrupt input pins.
These are key input interrupt pins.
This is the timer X I/O pin.
This is the timer X output pin.
This is the timer Y I/O pin.
This is the timer Z output pin.
This is the timer C input pin.
These are the timer C output pins.
This is a transfer clock I/O pin.
These are serial data input pins.
These are serial data output pins.
This is a reference voltage input pin for A/D con-
verter.
These are analog input pins for A/D converter.
These are 8-bit CMOS I/O ports. Each port has an
input/output select direction register, allowing each
pin in that port to be directed for input or output indi-
vidually.
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.
These are input only pins.
1.6 Pin Description
Table 1.3 shows the pin description
Table 1.3 Pin description
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