CY7C187-35PC Cypress Semiconductor Corp, CY7C187-35PC Datasheet - Page 3

• Manufacturer Part Number: CY7C187-35PC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C187-35PC

• Density: 64Kb
• Access Time (max): 35ns
• Sync/async: Asynchronous
• Architecture: Not Required
• Clock Freq (max): Not RequiredMHz
• Operating Supply Voltage (typ): 5V
• Address Bus: 16b
• Package Type: PDIP
• Operating Temp Range: 0C to 70C
• Number Of Ports: 2
• Supply Current: 70mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 22
• Word Size: 1b
• Number Of Words: 64K
• Lead Free Status / Rohs Status: Not Compliant

Document #: 38-05044 Rev. *A
Switching Characteristics
Switching Waveforms
READ CYCLE
t
t
t
t
t
t
t
t
WRITE CYCLE
t
t
t
t
t
t
t
t
t
t
Read Cycle No. 1
Notes:
RC
AA
OHA
ACE
LZCE
HZCE
PU
PD
WC
SCE
AW
HA
SA
PWE
SD
HD
LZWE
HZWE
10. Device is continuously selected, CE = V
Parameter
5. Test conditions assume signal transition time of 5 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to 3.0V, and output loading of the specified
6. At any given temperature and voltage condition, t
7. t
8. 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
9. WE is HIGH for read cycle.
DATA OUT
ADDRESS
I
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.
OL
HZCE
/I
OH
and t
and 30-pF load capacitance.
HZWE
[8]
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
are specified with C
[9, 10]
PREVIOUS DATA VALID
Description
L
= 5 pF as in part (b) of AC Test Loads. Transition is measured ±500 mV from steady-state voltage.
Over the Operating Range
[6]
IL
[6, 7]
[7]
.
t
OHA
HZCE
is less than t
t
AA
LZCE
Min.
15
15
12
12
12
10
3
3
0
0
0
0
5
for any given device.
[5]
-15
t
RC
Max.
15
15
15
8
7
Min.
25
20
20
20
15
10
5
5
0
0
0
0
5
-25
Max.
25
25
10
20
7
DATA VALID
Min.
35
25
25
25
20
15
5
5
0
0
0
0
5
-35
Max.
35
35
15
20
10
CY7C187
Page 3 of 9
C187–6
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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