參數(shù)資料
型號: 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
文件頁數(shù): 44/60頁
文件大?。?/td> 325K
代理商: UPD178P018AKK-T
44
μ
PD178P018A
PROM Write Mode Timing (byte program mode)
Cautions
1.
2.
3.
V
DD
should be applied before V
PP
, and removed after V
PP
.
V
PP
must not exceed +13.5 V including overshoot.
Reliability may be adversely affected if removal/reinsertion is performed while +12.5 V is being
applied to V
PP
.
PROM Read Mode Timing
Notes
1.
If you want to read within the range of t
ACC
, make the OE input delay time from the fall of CE a maximum
of t
ACC
– t
OE
.
2.
t
DF
is the time from when either OE or CE first reaches V
IH
.
A0 to A16
D0 to D7
V
PP
V
PP
V
DD
V
DD
V
DD
+ 1.5
V
DD
CE
V
IH
V
IL
PGM
V
IH
V
IL
OE
V
IH
V
IL
Program
Program Verify
Data Input
Data Output
Hi-Z
Hi-Z
Hi-Z
t
DF
t
AH
t
AS
t
DS
t
DH
t
VPS
t
VDS
t
CES
t
PW
t
OEH
t
OES
t
OE
CE
V
IH
V
IL
OE
V
IH
V
IL
D0 to D7
A0 to A16
Effective Address
t
CE
Hi-Z
Data Output
Hi-Z
t
ACC
Note1
t
OE
Note 1
t
OH
t
DF
Note 2
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