AT80251G2D-3CSUM(2006) View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT80251G2D-3CSUM
(Rev.:2006)

8/16-bit Microcontroller with Serial Communication Interfaces

Atmel Corporation 

Waveforms in Non-Page Mode Figure 8. External Bus Cycle: Code Fetch (Non-Page Mode)

ALE

TLHLL(1)

TLLRL(1) TRLRH(1) TRHLH1

PSEN#

TRLAZ

TLHAX(1)

TAVLL(1)

TLLAX

TRLDV(1)

TRHDZ1

TRHDX

P0

A7:0

D7:0

TAVRL(1)

TAVDV1(1)

TAVDV2(1)

Instruction In

TRHAX

P2/A16/A17

A15:8/A16/A17

Note: 1. The value of this parameter depends on wait states. See Table 39 and Table 40.

Figure 9. External Bus Cycle: Data Read (Non-Page Mode)

ALE

TLHLL(1)

TLLRL(1) TRLRH(1)

TRHLH2

RD#/PSEN#

P0

TRLAZ

TLHAX(1)

TAVLL(1)

TLLAX

TRLDV(1)

A7:0

TAVRL(1)

TAVDV1(1)

TAVDV2(1)

TRHDZ2

TRHDX

D7:0

Data In

TRHAX

P2/A16/A17

A15:8/A16/A17

Note: 1. The value of this parameter depends on wait states. See Table 39 and Table 40.

48 AT/TSC8x251G2D

4135F–8051–11/06

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