參數(shù)資料
型號: M37544G2ASP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP32
封裝: 28 X 8.90 MM, 1.78 MM PITCH, PLASTIC, SDIP-32
文件頁數(shù): 42/77頁
文件大小: 641K
代理商: M37544G2ASP
7544 Group (QzROM version)
REJ03B0108-0103
Rev.1.03
Mar 31, 2009
page 45 of 72
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
programmer which is applicable for this microcomputer.
Table 9 lists the pin description (QzROM writing mode) and Fig. 50
and Fig. 51 show the pin connections.
Refer to Fig. 52 and Fig. 53 for example of a connection with a se-
rial programmer.
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 9 Pin description (QzROM writing mode)
Pin
VCC, VSS
____________
RESET
XIN
XOUT
VREF
P00–P07
P13–P14
P20–P25
P30–P34, P37
CNVSS
P11
P12
P10
Name
Power source
Reset input
Clock input
Clock output
Analog reference voltage
I/O port
VPP input
ESDA input/output
ESCLK input
ESPGMB input
I/O
Input
Output
Input
I/O
Input
I/O
Input
Function
Apply 1.8 to 5.5V to VCC, and 0V to VSS.
____________
Reset input pin for active “L”. Reset occurs when RESET pin is hold at
an “L” level for 16 cycles or more of XIN.
Set the same termination as the single-chip mode.
Input the reference voltage of A/D converter to VREF.
Input “H” or “L” level signal or leave the pin open.
QzROM programmable power source pin.
Serial data I/O pin.
Serial clock input pin.
Read/program pulse input pin.
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