參數(shù)資料
型號(hào)： μPD78P078Y
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)： 32/84頁
文件大?。?/td> 472K
代理商： ΜPD78P078Y
m
PD78P078Y
32
5.3
PROM Read Procedure
The contents of PROM are readable to the external data bus (D0 to 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 (2) PROM programming mode”.
Supply +5 V to the V
DD
and V
PP
pins.
Input address of read data into the A0 to A16 pins.
Read mode
Output data to D0 to D7 pins.
(2)
(3)
(4)
(5)
The timings of the above steps (2) to (5) are shown in Figure 5-5.
Figure 5-5. PROM Read Timings
A0 to A16
CE (Input)
OE (Input)
D0 to D7
Hi-Z
Address Input
Data Output
Hi-Z
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