T89C51RD2-DDSC-M View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

T89C51RD2-DDSC-M

0 to 40 MHz Flash Programmable 8-bit Microcontroller

Atmel Corporation 

T89C51RD2

9.5.6. External Data Memory Read Cycle

ALE

PSEN

RD

PORT 0

PORT 2

ADDRESS

OR SFR-P2

TLLDV

TWHLH

TLLWL

TRLRH

TLLAX

A0-A7

TAVWL

TAVDV

TRLAZ

TRHDX

DATA IN

ADDRESS A8-A15 OR SFR P2

TRHDZ

9.5.7. Serial Port Timing - Shift Register Mode

Table 44. Symbol Description

Symbol

Parameter

TXLXL

TQVHX

TXHQX

TXHDX

TXHDV

Serial port clock cycle time

Output data set-up to clock rising edge

Output data hold after clock rising edge

Input data hold after clock rising edge

Clock rising edge to input data valid

Symbol

TXLXL

TQVHX

TXHQX

TXHDX

TXHDV

Table 45. AC Parameters for a Fix Clock

-M

-L

Min

Max

Min

Max

300

300

200

200

30

30

0

0

117

117

Units

ns

ns

ns

ns

ns

81

Rev. F - 15 February, 2001

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