參數(shù)資料
型號: μPD78F9418
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述: 8位單片機微控制器(8位單片微控制器)
文件頁數(shù): 95/128頁
文件大小: 614K
代理商: ΜPD78F9418
95
μ
PD78F9418
10. FLASH MEMORY PROGRAMMING
Flash memory is used as the built-in program memory of the
μ
PD78F9418.
The flash memory can be written even while the device is installed in the target system (on-board write). To write
a program into the flash memory, connect the dedicated flash writer (Flashpro II) to both the host machine and target
system.
Remark
The Flashpro II (formerly, Flashpro) is manufactured by Naito Densei Machida Seisakusho Co., Ltd.
10.1 Selecting the Transmission Method
The Flashpro II writes into flash memory by means of serial transmission. The transmission method to be used for
writing is selected from those listed in Table 10-1. To select a transmission method, use the format shown in Figure
10-1, according to the number of V
PP
pulses listed in Table 10-1.
Table 10-1. Transmission Methods
Transmission method
Number of channels
Pins
Number of V
PP
pulses
3-wire serial I/O
1
SCK
/ASCK/P20
SO/TxD/P21
SI/RxD/P22
0
UART
1
TxD/SO/P21
RxD/SI/P22
8
Pseudo 3-wire mode
Note
2
P00 (serial clock input)
P01 (serial data output)
P02 (serial data input)
12
P40/KR0 (serial clock input)
P41/KR1 (serial data output)
P42/KR2 (serial data input)
13
Note
Serial transfer by controlling the ports using software
Caution To select a transmission method, always use the corresponding number of V
PP
pulses listed in
Table 10-1.
Figure 10-1. Transmission Method Selection Format
10 V
V
DD
V
PP
RESET
V
SS
V
DD
1
2
n
V
SS
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