參數(shù)資料
型號: 4571
廠商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
中文描述: 單芯片4位微機的CMOS
文件頁數(shù): 74/126頁
文件大?。?/td> 1627K
代理商: 4571
Rev.1.02
May 25, 2007
Page 51 of 124
REJ03B0179-0102
4571 Group
QzROM Writing Mode
In the QzROM writing mode, the user ROM area can be
rewritten while the microcomputer is mounted on-board by using
a serial pro-grammer which is applicable for this microcomputer.
Table 24 lists the pin description (QzROM writing mode) and
Figure 53 shows the pin connections.
Refer to Figure 54 for examples of a connection with a serial pro-
grammer.
Contact the manufacturer of your serial programmer for serial
pro-grammer. Refer to the user ’s manual of your serial
programmer for details on how to use it.
Table 24 Pin description (QzROM writing mode)
Pin
Name
I/O
Function
VDD
Power source
Power supply voltage pin.
VSS
GND
GND pin.
KVPP input
QzROM programmable power source pin.
P01
SDA input/output
I/O
QzROM serial data I/O pin.
P00
SCLK input
Input
QzROM serial clock input pin.
P10
PGM input
Input
QzROM read/program pulse input pin.
RESET
Reset input
Input
Reset input pin.
Input “L” level signal.
XIN
Clock input
Either connect an oscillation circuit or connect XIN pin to VSS and leave
the XOUT pin open.
XOUT
Clock output
P02, P03, P11
P13,
P20/INT0, P21/INT1, P30,
P31, D0
D3, D4/CNTR0,
C/CNTR1
I/O port
I/O
Input “H” or “L” level signal or leave the pin open.
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