TS87C52X2 ATMEL Corporation, TS87C52X2 Datasheet - Page 43

• Manufacturer Part Number: TS87C52X2
• Description: 8-bit Microcontroller 8 Kbytes Otp
• Manufacturer: ATMEL Corporation

External Program Memory
Read Cycle
Figure 18. External Program Memory Read Cycle
External Data Memory
Characteristics
4184E–8051–09/02
PORT 0
PORT 2
PSEN
ALE
INSTR IN
OR SFR-P2
ADDRESS
T
LHLL
Table 29. Symbol Description
T
T
LLAX
AVLL
Symbol
A0-A7
T
T
T
T
T
T
T
T
T
T
T
T
T
T
WLWH
QVWX
QVWH
WHQX
WHLH
RLRH
RHDX
RHDZ
AVDV
AVWL
RLDV
LLDV
LLWL
RLAZ
T
AVIV
ADDRESS A8-A15
T
LLIV
T
Parameter
RD Pulse Width
WR Pulse Width
RD to Valid Data In
Data Hold After RD
Data Float After RD
ALE to Valid Data In
Address to Valid Data In
ALE to WR or RD
Address to WR or RD
Data Valid to WR Transition
Data set-up to WR High
Data Hold After WR
RD Low to Address Float
RD or WR High to ALE high
LLPL
TPLAZ
T
PLIV
T
PLPH
INSTR IN
T
PXIX
12 T
CLCL
T
PXIZ
T
PXAV
A0-A7
ADDRESS A8-A15
INSTR IN
TS8xCx2X2
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