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8 Mbit Firmware Hub
A Microchip Technology Company
SST49LF008A
Data Sheet
AC Characteristics (PP Mode)
Table 21: Read Cycle Timing Parameters, V DD =3.0-3.6V (PP Mode)
Symbol
Parameter
Min
Max
Units
T RC
T RST
T AS
T AH
T AA
T OE
T OLZ
T OHZ
T OH
Read Cycle Time
RST# High to Row Address Setup
R/C# Address Set-up Time
R/C# Address Hold Time
Address Access Time
Output Enable Access Time
OE# Low to Active Output
OE# High to High-Z Output
Output Hold from Address Change
270
1
45
45
0
0
120
60
35
ns
μs
ns
ns
ns
ns
ns
ns
ns
T21.2 25085
Table 22: Program/Erase Cycle Timing Parameters, V DD =3.0-3.6V (PP Mode)
Symbol
Parameter
Min
Max
Units
T RST
T AS
T AH
T CWH
T OES
T OEH
T OEP
T OET
T WP
T WPH
T DS
T DH
T IDA
T BP
T SE
T BE
T SCE
RST# High to Row Address Setup
R/C# Address Setup Time
R/C# Address Hold Time
R/C# to Write Enable High Time
OE# High Setup Time
OE# High Hold Time
OE# to Data# Polling Delay
OE# to Toggle Bit Delay
WE# Pulse Width
WE# Pulse Width High
Data Setup Time
Data Hold Time
Software ID Access and Exit Time
Byte Programming Time
Sector-Erase Time
Block-Erase Time
Chip-Erase Time
1
50
50
50
20
20
100
100
50
5
40
40
150
20
25
25
100
μs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
μs
ms
ms
ms
T22.2 25085
Table 23: Reset Timing Parameters, V DD =3.0-3.6V (PP Mode)
Symbol
Parameter
Min
Max
Units
T PRST
T RSTP
T RSTF
T RST1
T RSTE
T RSTC
V DD stable to Reset Low
RST# Pulse Width
RST# Low to Output Float
RST# High to Row Address Setup
RST# Low to reset during Sector-/Block-Erase or Program
RST# Low to reset during Chip-Erase
1
100
1
48
10
50
ms
ns
ns
μs
μs
μs
T23.1 25085
1. There will be a reset latency of T RSTE or T RSTC if a reset procedure is performed during a Program or Erase operation.
?2011 Silicon Storage Technology, Inc.
29
DS25085A
10/11
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