參數(shù)資料
型號(hào): UPD178P018AKK-T
廠商: NEC Corp.
元件分類: 圓形連接器
英文描述: Circular Connector; No. of Contacts:66; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:18; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:18-35 RoHS Compliant: No
中文描述: 8位單片機(jī)
文件頁數(shù): 22/60頁
文件大?。?/td> 325K
代理商: UPD178P018AKK-T
μ
PD178P018A
22
2.3 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 (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 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 2-5.
Figure 2-5. PROM Read Timings
Address Input
A0 to A16
Data Output
D0 to D7
OE (Input)
CE (Input)
Hi-Z
Hi-Z
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