T89C51RD2 ATMEL Corporation, T89C51RD2 Datasheet - Page 78
![no-image](/images/manufacturer_photos/0/0/79/atmel_corporation_sml.jpg)
T89C51RD2
Manufacturer Part Number
T89C51RD2
Description
0 to 40MHz Flash Programmable 8-bit Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.T89C51RD2.pdf
(86 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
T89C51RD2-CM
Manufacturer:
LUCENT
Quantity:
12 388
Part Number:
T89C51RD2-CM
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
T89C51RD2-IM
Manufacturer:
ATMEL
Quantity:
12 388
9.5.4. External Data Memory Characteristics
Rev. F - 15 February, 2001
Symbol
T
T
T
T
T
T
T
T
T
T
T
T
T
T
WLWH
QVWX
QVWH
WHQX
AVWL
WHLH
RLRH
RLDV
RHDX
RHDZ
AVDV
LLWL
LLDV
RLAZ
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
Table 41. Symbol Description
Parameter
T89C51RD2
78