參數(shù)資料
型號: M38D29GCHP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 6.25 MHz, MICROCONTROLLER, PQFP64
封裝: 10X 10 MM, 0.50 MM PITCH, PLASTIC, LQFP-64
文件頁數(shù): 99/136頁
文件大?。?/td> 2856K
代理商: M38D29GCHP
Rev.3.02
Apr 10, 2008
Page 65 of 131
REJ03B0177-0302
38D2 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 programmer which is applicable for this microcomputer.
Table 14 lists the pin description (QzROM writing mode) and
Figure 65 shows the pin connection.
Refer to Figure 66 to Figure 69 for examples of a connection
with a serial programmer.
Contact the manufacturer of your serial programmer for serial
programmer. Refer to the user ’s manual of your serial
programmer for details on how to use it.
Table 14 Pin description (QzROM writing mode)
Pin
Name
I/O
Function
VCC, VSS
Power source
Input
Apply 2.7 to 5.5 V to VCC, and 0 V to VSS.
RESET
Reset input
Input
Reset input pin for active “L”. Reset occurs when RESET pin is
held at an “L” level for 16 cycles or more of XIN.
XIN
Clock input
Input
Set the same termination as the single-chip mode.
XOUT
Clock output
Output
VREF
Analog reference
voltage
Input
Input the reference voltage of A/D converter to VREF.
AVSS
Analog power source
Input
Connect AVss to Vss.
P00
P07
P10
P17
P20
P27
P33
P37
P40
P47
P50
P57
P60
P62
I/O port
I/O
Input “H” or “L” level signal or leave the pin open.
OSCSEL
VPP input
Input
QzROM programmable power source pin.
P32
ESDA input/output
I/O
Serial data I/O pin.
P31
ESCLK input
Input
Serial clock input pin.
P30
ESPGMB input
Input
Read/program pulse input pin.
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