參數(shù)資料
型號: 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)
文件頁數(shù): 13/86頁
文件大?。?/td> 454K
代理商: UPD78323
13
μ
PD78323, 78324
1.2
PINS OTHER THAN PORTS (2/2)
Dual-
Function Pin
Function
Pin Name
I/O
AN0 to AN7
AV
REF
AV
DD
AV
SS
RESET
X1
X2
V
DD
V
SS
NC
Input
Input
Input
Input
––
A/D converter analog input.
A/D converter reference voltage input.
A/D converter analog power supply
A/D converter GND
System reset input
Crystal connect pin for sysem clock oscillation. When an external clock is supplied,
the clock is input to X1 and the inverted clock is input to X2. (X2 can also be left
open.)
Positive power supply
GND pin
Not internally connected. Connected to V
SS
(GND) (can also be left open).
EA
Input
In the
μ
PD78324, EA pin is normally connected to V
DD
. Connecting EA pin to V
SS
sets
the ROM-less mode and accesses the external memory. In the
μ
PD78323, this pin should
be fixed to “0” (low level). The EA pin level cannot be changed during operation.
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