UPD78F0138 NEC, UPD78F0138 Datasheet - Page 439

• Manufacturer Part Number: UPD78F0138
• Description: (UPD78xxxx) 8-Bit Single-Chip Microcontrollers
• Manufacturer: NEC

27.3 Writing with Flash Programmer
(1) On-board programming
(2) Off-board programming
(1) 3-wire serial I/O (CSI10)
Signal Name
SI/RxD
SO/TxD
SCK
CLK
/RESET
V
H/S
V
GND
PP
DD
Data can be written to the flash memory on-board or off-board, by using a dedicated flash programmer.
Notes 1.
Cautions 1. Be sure to connect the REGC pin in either of the following ways.
The contents of the flash memory can be rewritten after the
target system. The connectors that connect the dedicated flash programmer must be mounted on the target
system.
Data can be written to the flash memory with a dedicated program adapter (FA series) before the
78F0138 is mounted on the target system.
Pin Configuration of Dedicated Flash Programmer
Remark The FA series is a product of Naito Densei Machida Mfg. Co., Ltd.
Table 27-4. Wiring Between
2.
Input
Output
Output
Output
Output
Output
Input
I/O
2. When connecting the REGC pin to GND via a 1
When using the clock out of the flash programmer, connect CLK of the programmer to X1, and connect
its inverse signal to X2.
Flashpro III only
I/O
−
• To GND via a 1
• Directly to V
from the CLK pin of the flash programmer.
Create an oscillator on the board to supply a clock.
Receive signal
Transmit signal
Transfer clock
Clock to
Reset signal
Write voltage
Handshake signal
V
monitor
Ground
DD
voltage generation/voltage
Note 2
µ
PD78F0134 or 78F0138
Pin Function
DD
µ
F capacitor
µ
CHAPTER 27
PD78F0134 or 78F0138 and Dedicated Flash Programmer (1/2)
User’s Manual U16228EJ2V0UD
SO10/P12
SI10/RxD0/P11
SCK10/TxD0/P10
X1
X2
RESET
V
Not needed
V
EV
AV
V
EV
AV
µ
PP
DD
SS
PD78F0134, 78F0138
Note 1
DD
REF
SS
SS
Pin Name
With CSI10
µ
PD78F0134 or 78F0138 has been mounted on the
µ
F capacitor, the clock cannot be supplied
Not needed
Pin No.
25
26
27
33
32
7
8
9
3
4
1
6
2
SO10/P12
SI10/RxD0/P11
SCK10/TxD0/P10
X1
X2
RESET
V
HS/P15/TOH0
V
EV
AV
V
EV
AV
PP
DD
SS
Note 1
DD
REF
SS
SS
Pin Name
With CSI10 + HS
µ
PD78F0134 or
Pin No.
25
26
27
22
33
32
7
8
9
3
4
1
6
2
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