28F640W30 Datasheet, PDF (84/102 Pages) Intel Corporation – 1.8 Volt Intel Wireless Flash Memory with 3 Volt I/O and SRAM (W30)

Numonyx™ Wireless Flash Memory (W30)
Whether this delay occurs depends on the starting address.
• If the starting address is aligned to a 4-word boundary, there is no delay.
• If the starting address is the end of a 4-word boundary, the output delay is one
clock cycle less than the First Access Latency Count; this is the worst-case delay.
The delay takes place only once, and only if the burst sequence crosses a 16-word
boundary. The WAIT pin informs the system of this delay. For timing diagrams of WAIT
functionality, see these figures:
• Figure 11, “Single Synchronous Read-Array Operation Waveform” on page 34
• Figure 12, “Synchronous 4-Word Burst Read Operation Waveform” on page 35
• Figure 13, “WAIT Functionality for EOWL (End-of-Word Line) Condition Waveform”
on page 36
Table 30: Sequence and Burst Length
Start
Addr.
(Dec)
0
1
2
3
4
5
6
7
4-Word Burst
CR[2:0]=001b
Linear
0-1-2-3
1-2-3-0
2-3-0-1
3-0-1-2
Burst Addressing Sequence (Decimal)
8-Word Burst
CR[2:0]=010b
16-Word Burst1
CR[2:0]=011b
Linear
0-1-2-3-4-5-6-7
1-2-3-4-5-6-7-0
2-3-4-5-6-7-0-1
3-4-5-6-7-0-1-2
4-5-6-7-0-1-2-3
5-6-7-0-1-2-3-4
6-7-0-1-2-3-4-5
7-0-1-2-3-4-5-6
Linear
0-1-2...14-15
1-2-3...14-15-0
2-3-4...15-0-1
3-4-5...15-0-1-2
4-5-6...15-0-1-2-3
5-6-7...15-0-1...4
6-7-8...15-0-1...5
7-8-9...15-0-1...6
Continuous Burst
CR[2:0]=111b
Linear
0-1-2-3-4-5-6-...
1-2-3-4-5-6-7-...
2-3-4-5-6-7-8-...
3-4-5-6-7-8-9-...
4-5-6-7-8-9-10...
5-6-7-8-9-10-11...
6-7-8-9-10-11-12-...
7-8-9-10-11-12-13...
14
14-15-0-1...13
15
15-0-1-2-3...14
0
0-1-2-3
0-1-2-3-4-5-6-7
0-1-2...14-15
1
1-2-3-4
1-2-3-4-5-6-7-8
1-2-3...15-16
2
2-3-4-5
2-3-4-5-6-7-8-9
2-3-4...16-17
3
3-4-5-6
3-4-5-6-7-8-9-10
3-4-5...17-18
4
4-5-6-7-8-9-10-11
4-5-6...18-19
5
5-6-7-8-9-10-11-12
5-6-7...19-20
6
6-7-8-9-10-11-12-13
6-7-8...20-21
7
7-8-9-10-11-12-13-14
7-8-9...21-22
14-15-16-17-18-19-20-...
15-16-17-18-19-...
0-1-2-3-4-5-6-...
1-2-3-4-5-6-7-...
2-3-4-5-6-7-8-...
3-4-5-6-7-8-9-...
4-5-6-7-8-9-10...
5-6-7-8-9-10-11...
6-7-8-9-10-11-12-...
7-8-9-10-11-12-13...
14
15
Note: Available on the 130 nm lithography.
14-15...28-29
15-16...29-30
14-15-16-17-18-19-20-...
15-16-17-18-19-20-21-...
Datasheet
84
November 2007
Order Number: 290702-13