CY7C199-15ZC Cypress Semiconductor Corp, CY7C199-15ZC Datasheet - Page 5

• Manufacturer Part Number: CY7C199-15ZC
• Description: IC SRAM 256KBIT 15NS 28TSOP
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C199-15ZC

• Format - Memory: RAM
• Memory Type: SRAM - Asynchronous
• Memory Size: 256K (32K x 8)
• Speed: 15ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-TSOP I
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1063

Switching Characteristics
Document #: 38-05160 Rev. **
READ CYCLE
t
t
t
t
t
t
t
t
t
t
t
WRITE CYCLE
t
t
t
t
t
t
t
t
t
t
Shaded area contains advance information.
Notes:
10. 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
11. The minimum write cycle time for write cycle #3 (WE controlled, OE LOW) is the sum of t
RC
AA
OHA
ACE
DOE
LZOE
HZOE
LZCE
HZCE
PU
PD
WC
SCE
AW
HA
SA
PWE
SD
HD
HZWE
LZWE
7.
8.
9.
Parameter
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
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.
HZOE
, t
HZCE
, and t
[10, 11]
Read Cycle Time
Address to Data Valid
Data Hold from Address Change
CE LOW to Data Valid
OE LOW to Data Valid
OE LOW to Low Z
OE HIGH to High Z
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 LOW to High Z
WE HIGH to Low Z
HZWE
are specified with C
Description
Over the Operating Range
[8]
[8]
[8,9]
[9]
[8]
[8, 9]
L
= 5 pF as in part (b) of AC Test Loads. Transition is measured 500 mV from steady-state voltage.
HZCE
is less than t
Min.
LZCE
8
3
0
3
0
8
7
7
0
0
7
5
0
3
7C199-8
OL
/I
[3, 7]
OH
, t
HZOE
and 30-pF load capacitance.
Max.
4.5
8
8
5
4
8
5
is less than t
Min.
HZWE
10
10
7C199-10
3
0
3
0
7
7
0
0
7
5
0
3
LZOE
and t
, and t
Max.
SD
10
10
10
.
5
5
5
6
HZWE
is less than t
Min.
12
12
7C199-12
3
0
3
0
9
9
0
0
8
8
0
3
LZWE
Max.
12
12
12
5
5
5
7
for any given device.
Min.
15
15
10
10
7C199-15
3
0
3
0
0
0
9
9
0
3
Max.
CY7C199
15
15
15
7
7
7
7
Page 5 of 16
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns