AT75C310 datasheet(3/12 Pages) ATMEL

部件名	AT75C310

功能描述	Smart Internet Appliance Processor

PDF	12 Pages

Scroll/Zoom	100%

制造商	ATMEL [ATMEL Corporation]

网页	http://www.atmel.com

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AT75C310

Memory Timing Waveforms

Figure 2. DRAM Read Cycle (Single Read)

Table 1. DRAM Read Cycle (Single Read) Timings

Symbol

Parameter

Min (ns)

Max (ns)

tRC

Read or Write Cycle Time

125.0

–

RAS

RAS Pulse Width

82.0

–

RAS Precharge Time

42.0

–

tCSH

CAS Hold Time

61.0

–

CRP

CAS to RAS Precharge Time

49.0

–

RCD

RAS to CAS Delay Time

41.0

–

tRSH

RAS Hold Time

29.0

–

CAS

CAS Pulse Width

20.0

–

ASR

Row Address Setup Time

1.0

tRAH

Row Address Hold Time

22.0

ASC

Column Address Setup Time

15.0

CAH

Column Address Hold Time

21.0

tCAC

Access Time from CAS

–

22.0

OEA

Access Time from NDOE

–

34.0

Access Time from Column Address

–

38.0

tRAC

Access Time from RAS

–

63.0

OHO

Data Hold from NDOE

–

tOHO

tAA

tRAC

tOEA

tCAC

tRC

tRP

tRAS

tRCD

tRSH

tCSH

tCRP

tCAS

tCAH

tASC

tRAH

tASR

NDOE

NCASx

NRASx

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