vrs51c1100 ETC-unknow, vrs51c1100 Datasheet - Page 47

• Manufacturer Part Number: vrs51c1100
• Description: Versa 8051 Mcu With 128kb Of Iap/isp Flash
• Manufacturer: ETC-unknow

External Data Memory Write Cycle
The following timing diagram provides External Data Memory Write Cycle timing information.
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F
IGURE
VRS51C1100
PORT 0
PORT 2
31: E
#PSEN
ALE
#WR
XTERNAL
D
ATA
M
EMORY
W
RITE
TLHLL
TAVLL
C
YCLE
From Ri or DPL
A0-A7
TLLAX
TAVYL
TLLYL
P2.0-P2.7 or A8-A15 from DPH
TQVWX
TWLWH
TQVWH
DATA OUT
TWHQX
TYHLH
From PCL
A8-A15 from PCH
A0-A7
page 47 of 50
INSTRL
IN