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UPD78044F Datasheet(PDF) 21 Page - NEC

Part # UPD78044F
Description  8-BIT SINGLE-CHIP MICROCONTROLLER
PDF  66 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD78044F Datasheet(HTML) 21 Page - NEC

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µPD78F0034A, 78F0034AY
21
Data Sheet U14040EJ4V0DS
Table 6-2. List of Communication Mode (
µPD78F0034AY)
Communication Mode
Channels
Pin Used
VPP Pulses
3-wire serial I/O
1
SI30/P20
0
SO30/P21
SCK30/P22
I2C bus
1
SDA0/P32
4
SCL0/P33
UART
1
RxD0/P23
8
TxD0/P24
Pseudo 3-wire serial I/O
1
P72/TI50/TO50
12
(serial clock input)
P71/TI01
(serial data output)
P70/TI00/TO0
(serial data input)
Caution Be sure to select a communication mode using the number of VPP pulses shown in Table 6-2.
Figure 6-1. Format of Communication Mode Selection
10 V
VPP pulses
Flash write mode
VPP
RESET
VDD
VSS
VDD
VSS
12
n



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