參數(shù)資料
型號(hào)： μPD78F0034
廠商： NEC Corp.
元件分類： 8位微控制器
英文描述： 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
中文描述： 8位微控制器與2/4/8K字節(jié)在系統(tǒng)可編程閃存
文件頁數(shù)： 17/52頁
文件大?。?/td> 393K
代理商： ΜPD78F0034
μ
PD78F0034
17
Preliminary Data Sheet
4. FLASH MEMORY PROGRAMMING
Writing to a flash memory can be performed without removing the memory from the target system (on board).
Writing is performed connecting the dedicated flash programmer (Flashpro II) to the host machine and the target
system.
Also, it can be performed on an adapter for flash memory writing connected to the Flashpro II.
Remark
Flashpro II is a product of Naitou Densei Machidaseisakusho Co., Ltd.
4.1 Selection of Transmission Method
Writing to a flash memory is performed using the Flashpro II with a serial transmission mode. One of the
transmission method in Table 4-1 is selected. The selection of the transmission method is made by using the
format shown in Figure 4-1. Each transmission method is selected by the number of V
PP
pulses shown in Table
4-1.
Table 4-1. List of Transmission Method
Transmission Method
Channels
Pin
V
PP
Pulses
3-wire serial I/O
2
SI30/P20
SO30/P21
SCK30/P22
0
SI31/P34
SO31/P35
SCK31/P36
1
UART
1
RxD0/P23
TxD0/P24
ASCK0/P25
8
Pseudo 3-wire serial I/O
1
P72/TI50/TO50
(serial clock input)
P71/TI01
(serial data output)
P70/TI00/TO0
(serial data input)
12
Caution
Be sure to select a communication system using the number of V
PP
pulses shown in Table
4-1.
Figure 4-1. Format of Transmission Method Selection
1
10 V
V
PP
pulses
Flash write mode
V
PP
RESET
V
DD
V
SS
V
DD
V
SS
2
n
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