W78LE54 Datasheet, PDF (16/22 Pages) Winbond – 8-BIT MTP MICROCONTROLLER

Preliminary W78LE54
Program Operation
PARAMETER
VPP Setup Time
Data Setup Time
Data Hold Time
Address Setup Time
Address Hold Time
CE Program Pulse Width for
Program Operation
OECTRL Setup Time
OECTRL Hold Time
OE Setup Time
OE High to Output Float
Data Valid from OE
SYMBOL
TVPS
TDS
TDH
TAS
TAH
TPWP
TOCS
TOCH
TOES
TDFP
TOEV
MIN.
2.0
2.0
2.0
2.0
0
290
2.0
2.0
2.0
0
-
TYP.
-
-
-
-
-
300
-
-
-
-
-
MAX.
-
-
-
-
-
310
-
-
-
130
150
UNIT
µS
µS
µS
µS
µS
µS
µS
µS
µS
nS
nS
Note: Flash data can be accessed only in flash mode. The RST pin must pull in VIH status, the ALE pin must pull in VIL status, and
the PSEN pin must pull in VIH status.
TIMING WAVEFORMS
Program Fetch Cycle
XTAL1
S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6
ALE
PSEN
PORT 2
T_APL
T_ALW
T_PSW
T_AAS
T_AAH
T_PDA
T_PDH, T_PDZ
PORT 0
Code
A0-A7
Data A0-A7
Code A0-A7
Data A0-A7
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