STK17TA8-RF25ITR Cypress Semiconductor Corp, STK17TA8-RF25ITR Datasheet - Page 8

• Manufacturer Part Number: STK17TA8-RF25ITR
• Description: IC NVSRAM 1MBIT 25NS 48SSOP
• Manufacturer: Cypress Semiconductor Corp

Specifications of STK17TA8-RF25ITR

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 1M (128K x 8)
• Speed: 25ns
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

SRAM WRITE Cycles #1 and #2
Document #: 001-52039 Rev. *A
Notes
7. If W is low when E goes low, the outputs remain in the high-impedance state.
8.
NO.
13
14
15
16
17
18
19
20
21
11
E or W must be ≥ V
t
t
t
t
t
t
t
t
t
t
AVAV
WLWH
ELWH
DVWH
WHDX
AVWH
AVWL
WHAX
WLQZ
WHQX
ADDRESS
DATA OUT
#1
DATA OUT
5, 7
ADDRESS
DATA IN
DATA IN
DATA IN
IH
W
E
during address transitions.
Symbols
W
E
t
t
t
t
t
t
t
t
AVAV
WLEH
ELEH
DVEH
EHDX
AVEH
AVEL
EHAX
#2
t
AVWL
18
t
AVEL
18
t
t
t
t
t
t
t
t
t
t
WC
WP
CW
DW
DH
AW
AS
WR
WZ
OW
PREVIOUS DATA
Alt.
Figure 7. SRAM WRITE Cycle #1: W Controlled
Figure 8. SRAM WRITE Cycle #2: E Controlled
Write Cycle Time
Write Pulse Width
Chip Enable to End of Write
Data Setup to End of Write
Data Hold after End of Write
Address Setup to End of Write
Address Setup to Start of Write
Address Hold after End of Write
Write Enable to Output Disable
Output Active after End of Write
t
t
WLQZ
AVEH
17
20
t
AVWH
17
t
WLWH
t
13
ELWH
14
Parameter
t
t
ELEH
t
AVAV
14
WLEH
11
t
13
AVAV
HIGH IMPEDANCE
11
t
HIGH IMPEDANCE
DVEH
15
t
DVWH
15
DATA VALID
DATA VALID
[7, 8]
[7, 8]
STK17TA8-25
t
t
t
WHDX
WHAX
Min
EHDX
16
t
19
EHAX
16
25
20
20
10
20
0
0
19
0
3
t
WHQX
21
Max
10
STK17TA8-45
Min
45
30
30
15
30
0
0
0
3
STK17TA8
Max
15
Page 8 of 24
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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