參數(shù)資料
型號(hào): UPD78323
廠商: NEC Corp.
英文描述: 16/8-BIT SINGLE-CHIP MICROCONTROLLER
中文描述: 16/8-BIT單片機(jī)
文件頁(yè)數(shù): 14/86頁(yè)
文件大?。?/td> 454K
代理商: UPD78323
14
μ
PD78323, 78324
1.3
PIN INPUT/OUTPUT CIRCUITS AND RECOMMENDED CONNECTION OF UNUSED PINS
The pin input/output circuits, partly simplified, are shown in Table 1-1 and Figure 1-1.
Table 1-1. I/O Circuit Types of Pins and Their Recommended
Connection Methods when Unused
Recommended Connection Method
Input/Output
Circuit Type
Pin
P00/RTP0 to P07/RTP7
P20/NMI
P21/INTP0 to P26/INTP5
P27/INTP6/TI
P30/T
X
D
P31/R
X
D
P32/SO/SB0
P33/SI/SB1
P34/SCK
P40/AD0 to P47/AD7
P50/A8 to P57/A15
P70/AN0 to P77/AN7
P80/TO00 to P83/TO03
P84/TO10, P85/TO11
P90/RD
P91/WR
P92/TAS
P93/TMD
WDTO
ASTB
EA
RESET
AV
REF
, AV
SS
AV
DD
NC
Input mode :
Individually connected to V
DD
or V
SS
via resistor
Output mode: Leave open
Connected to V
SS
5
2
5
8
5
9
5
5
3
4
1
2
––
––
––
Input mode :
Individually connected to V
DD
or V
SS
via resistor
Output mode: Leave open
Connected to V
SS
Input mode :
Individually connected to V
DD
or V
SS
via resistor
Output mode: Leave open
Leav open
––
––
Connected to V
SS
Connected to V
DD
Connected to V
SS
(can also be left open)
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