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參數(shù)資料
| 型號(hào)： | μPD78F4046 |
| 廠商： | NEC Corp. |
| 英文描述： | 8 Bit Single Chip Microcontrollers(8位單片微控制器) |
| 中文描述： | 8位單片機(jī)微控制器（8位單片微控制器） |
| 文件頁數(shù)： | 13/26頁 |
| 文件大小： | 159K |
| 代理商： | ΜPD78F4046 |
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m
PD78F4046
1 3
5.2 Pins Other Than Port Pins (2/2)
Pin Name
I/O
Shared by:
Function
LWR
Output
P91
When external 8-bit bus is specified
Write strobe to external memory
When external 16-bit bus is specified
Write strobe to external memory located at lower position
HWR
P92
Write strobe to external memory located at higher position when external
16-bit bus is specified
ASTB
Output
P93
Timing signal output to externally latch address information output from
AD0 through AD15 pins to access external memory
WAIT
Input
P94
Inserts wait.
BWD
Input
–
Sets bus width.
MODE
Input
V
PP
Directly connect this pin to V
SS
in normal operation mode (this pin specifies
test mode of IC).
CLKOUT
Output
–
Clock output
X1
Input
–
Connect crystal for system clock oscillation (clock can be also input to X1)
X2
–
–
RESET
Input
–
Chip reset
ANI0-ANI7
Input
P70-P77
Analog voltage input for A/D converter
ANI8-ANI15
P80-P87
AV
REF
–
–
Reference voltage for A/D converter
AV
DD
–
Positive power for A/D converter
AV
SS
–
GND for A/D converter
V
DD
–
Positive power
V
PP
Input
MODE
Flash memory programming mode setting
Pin applying high voltage at program write/verify
V
SS
–
–
GND
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