參數(shù)資料
型號(hào): W78E52
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT MTP Monitor Microcontroller(多次可編程的8位的監(jiān)視微控制器)
中文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PDIP40
封裝: DIP-40
文件頁(yè)數(shù): 12/20頁(yè)
文件大?。?/td> 284K
代理商: W78E52
W78E52
- 12 -
Port Access Cycle
PARAMETER
SYMBOL
T
PDS
T
PDH
T
PDA
MIN.
1 T
CP
0
1 T
CP
TYP.
-
-
-
MAX.
-
-
-
UNIT
nS
nS
nS
Port Input Setup to ALE Low
Port Input Hold from ALE Low
Port Output to ALE
Note: Ports are read during S5P2, and output data becomes available at the end of S6P2. The timing data are referenced to
ALE, since it provides a convenient reference.
Program Operation
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
V
PP
Setup Time
T
VPS
2.0
-
-
μ
S
μ
S
μ
S
μ
S
μ
S
μ
S
Data Setup Time
T
DS
2.0
-
-
Data Hold Time
T
DH
2.0
-
-
Address Setup Time
T
AS
2.0
-
-
Address Hold Time
T
AH
0
-
-
CE
Program Pulse Width for
Program Operation
T
PWP
95
100
105
OECTRL Setup Time
T
OCS
2.0
-
-
μ
S
μ
S
μ
S
OECTRL Hold Time
T
OCH
2.0
-
-
OE
Setup Time
T
OES
2.0
-
-
OE
High to Output Float
T
DFP
0
-
130
nS
Data Valid from
OE
T
OEV
-
-
150
nS
Note: Flash data can be accessed only in flash mode. The RST pin must pull in V
IH
status, the ALE pin must pull in V
IL
status, and
the PSEN pin must pull in V
IH
status.
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