Switching characteristics – Cypress CY62136VN User Manual
Page 5
CY62136VN MoBL
®
Document #: 001-06510 Rev. *A
Page 5 of 12
Switching Characteristics
Over the Operating Range
[9]
Parameter
Description
55 ns
70 ns
Unit
Min.
Max.
Min.
Max.
Read Cycle
t
RC
Read Cycle Time
55
70
ns
t
AA
Address to Data Valid
55
70
ns
t
OHA
Data Hold from Address Change
10
10
ns
t
ACE
CE LOW to Data Valid
55
70
ns
t
DOE
OE LOW to Data Valid
25
35
ns
t
LZOE
OE LOW to Low-Z
[10]
5
5
ns
t
HZOE
OE HIGH to High-Z
[10, 11]
25
25
ns
t
LZCE
CE LOW to Low-Z
[10]
10
10
ns
t
HZCE
CE HIGH to High-Z
[10, 11]
25
25
ns
t
PU
CE LOW to Power-up
0
0
ns
t
PD
CE HIGH to Power-down
55
70
ns
t
DBE
BLE / BHE LOW to Data Valid
25
35
ns
t
LZBE
BLE / BHE LOW to Low-Z
[10, 11]
5
5
ns
t
HZBE
BLE / BHE HIGH to High-Z
[12]
25
25
ns
Write Cycle
[12, 13]
t
WC
Write Cycle Time
55
70
ns
t
SCE
CE LOW to Write End
45
60
ns
t
AW
Address Set-up to Write End
45
60
ns
t
HA
Address Hold from Write End
0
0
ns
t
SA
Address Set-up to Write Start
0
0
ns
t
PWE
WE Pulse Width
40
50
ns
t
BW
BLE / BHE LOW to Write End
50
60
ns
t
SD
Data Set-up to Write End
25
30
ns
t
HD
Data Hold from Write End
0
0
ns
t
HZWE
WE LOW to High-Z
[10, 11]
20
25
ns
t
LZWE
WE HIGH to Low-Z
[10]
5
10
ns
Notes:
9. Test conditions assume signal transition time of 5 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to V
CC
typ., and output loading of the specified
I
OL
/I
OH
and 30-pF load capacitance.
10. At any given temperature and voltage condition, t
HZCE
is less than t
LZCE
, t
HZOE
is less than t
LZOE
, and t
HZWE
is less than t
LZWE
for any given device.
11. t
HZOE
, t
HZCE
, and t
HZWE
are specified with C
L
= 5 pF as in (b) of AC Test Loads. Transition is measured ±500 mV from steady-state voltage.
12. 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.
13. The minimum write cycle time for write cycle 3 (WE controlled, OE LOW) is the sum of t
HZWE
and t
SD
.