參數(shù)資料
型號(hào): μPD70P083
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): 25/56頁
文件大?。?/td> 390K
代理商: ΜPD70P083
25
m
PD78P083
A0-A14
CE (Input)
OE (Input)
D0-D7
Hi-Z
Address Input
Data Output
Hi-Z
4.3
PROM Read Procedure
The contents of PROM are readable to the external data bus (D0-D7) according to the read procedure shown below.
(1)
Fix the RESET pin at low level, supply +5 V to the V
PP
pin, and connect all other unused pins as shown in
“PIN
CONFIGURATIONS (TOP VIEW) (2) PROM programming mode”.
Supply +5 V to the V
DD
and V
PP
pins.
Input address of read data into the A0-A16 pins.
Read mode
Output data to D0-D7 pins.
(2)
(3)
(4)
(5)
The timings of the above steps (2) to (5) are shown in Figure 4-5.
Figure 4-5. PROM Read Timings
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