VRS51C1000-40-L RAMTRON [Ramtron International Corporation], VRS51C1000-40-L Datasheet - Page 45

• Manufacturer Part Number: VRS51C1000-40-L
• Description: Versa 8051 MCU with 64KB of IAP/ISP Flash
• Manufacturer: RAMTRON [Ramtron International Corporation]

External Data Memory Write Cycle
The following timing diagram provides External Data Memory Write Cycle timing information.
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F
IGURE
VRS51C1000
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 45 of 48
INSTRL
IN