CY7C197-15VC Cypress Semiconductor Corp, CY7C197-15VC Datasheet - Page 4

• Manufacturer Part Number: CY7C197-15VC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C197-15VC

• Density: 256Kb
• Access Time (max): 15ns
• Operating Supply Voltage (typ): 5V
• Package Type: SOJ
• Operating Temp Range: 0C to 70C
• Supply Current: 140mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 24
• Word Size: 1b
• Lead Free Status / Rohs Status: Not Compliant

Switching Characteristics
Document #: 38-05049 Rev. **
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Notes:
Parameter
RC
AA
OHA
ACE
LZCE
HZCE
PU
PD
WC
SCE
AW
HA
SA
PWE
SD
HD
LZWE
HZWE
6.
7.
8.
9.
READ CYCLE
WRITE CYCLE
Test conditions assume signal transition time of 3 ns or less for -12 and -15 speeds and 5 ns or less for -20 and slower speeds, timing reference levels of
1.5V, input pulse levels of 0 to 3.0V, and output loading of the specified I
At any given temperature and voltage condition, t
t
The internal write time of the memory is defined by the overlap of CE LOW and WE LOW. Both signals must be LOW to initiate a write and either signal can
terminate a write by going HIGH. The data input set-up and hold timing should be referenced to the rising edge of the signal that terminates the write.
HZCE
and t
HZWE
Read Cycle Time
Address to
Data Valid
Output Hold from
Address Change
CE LOW to
Data Valid
CE LOW to
Low Z
CE HIGH to
High Z
CE LOW to
Power-Up
CE HIGH to
Power-Down
Write Cycle Time
CE LOW to
Write End
Address Set-Up to
Write End
Address Hold from
Write End
Address Set-Up to
Write Start
WE Pulse Width
Data Set-Up to
Write End
Data Hold from
Write End
WE HIGH to
Low Z
WE LOW to
High Z
Description
[9]
are specified with C
[7]
[7]
[7, 8]
[7,8]
L
Over the Operating Range
= 5 pF as in part (b) in AC Test Loads and Waveforms. Transition is measured 500 mV from steady-state voltage.
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
7C197-12
12
12
3
3
0
9
9
0
0
8
8
0
2
12
12
12
HZCE
5
7
is less than t
7C197-15
15
15
10
10
3
3
0
0
0
9
9
0
2
LZCE
15
15
15
7
7
[6]
OL
and t
/I
OH
7C197-20
20
20
15
15
15
10
3
3
0
0
0
0
0
3
0
HZWE
and 30-pF load capacitance.
is less than t
20
20
20
10
9
7C197-25
25
25
20
20
20
15
3
3
0
0
0
0
0
3
0
LZWE
for any given device.
25
25
20
11
11
7C197-35
35
35
30
30
25
17
3
3
0
0
0
0
0
3
0
35
35
15
25
15
7C197-45
45
45
40
40
30
20
3
3
0
0
0
0
0
3
0
CY7C197
Page 4 of 10
45
45
15
30
15
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns