參數(shù)資料
型號(hào): UPD78P368AGF-3B9
廠商: NEC Corp.
元件分類: 圓形連接器
英文描述: Circular Connector; No. of Contacts:56; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:25-4 RoHS Compliant: No
中文描述: 16 / 8位單片機(jī)
文件頁數(shù): 21/52頁
文件大?。?/td> 545K
代理商: UPD78P368AGF-3B9
21
m
PD78P368A
4.4 PROCEDURE FOR READING FROM PROM
The following is a procedure for reading out the contents of PROM to the external data bus (D0 to D7).
(1)
Always set each pin as follows: MODE0/V
PP
= H and MODE1 = L. Connect unused pins according to PIN
CONFIGURATION (2).
Apply +5 V to the V
DD
and MODE0/V
PP
pins.
Input the address of data to be read into the A0 to A16 pins.
Read mode (CE = L, OE = L)
Output the data on the D0 to D7 pins.
(2)
(3)
(4)
(5)
Fig. 4-5 is a timing chart of these steps (2) to (5).
Fig. 4-5 PROM Read Timing Chart
Address input
Hi-Z
Hi-Z
A0 - A16
D0 - D7
CE (input)
OE (input)
Data output
相關(guān)PDF資料
PDF描述
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