CYNSE70128-66BGC Cypress Semiconductor Corp, CYNSE70128-66BGC Datasheet - Page 120

• Manufacturer Part Number: CYNSE70128-66BGC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CYNSE70128-66BGC

• Operating Supply Voltage (min): 1.425V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / Rohs Status: Not Compliant

12.9
Table 12-2 shows the idle cycle requirements between operations. The operations in the second column represent operations
already performed, and the operations in the first row are those we would like to perform next.
Example calculations:
Document #: 38-02040 Rev. *F
1. Read after Write: The Write takes two 2 cycles, and one 1 idle cycle is required. Thus if the Write is issued in cycle 1, the Read
2. x72 Search after Read: The Read command can be issued in 1 cycle after which 5 idle cycles are required before issuing any
TLSZ = 10, HLAT = XXX, LRAM = 1, LDEV = 1.
cannot be issued until cycle 4. Note, all cycles after an SRAM Read or an NSE Read (blocking) operation are considered
blocked until the ACK signal is returned.
other command. Thus if the Read is issued in cycle 1, the Search cannot be issued until cycle 7.
Timing Sequences for Back-to-Back Operations
Figure 12-14. SRAM Write Through Device Number 0 in a Bank of 31 CYNSE70128 Devices
SADR[23:0]
CMD[10:2]
CMD[1:0]
PHS_L
CMDV
CLK2X
ACK
ALE_L
OE_L
CE_L
SSV
SSF
WE_L
DQ
1
1
0
1
z
0
0
Address
cycle
Write
1
A B
01
cycle
(Device Number 30 Timing)
2
x
cycle
3
x
cycle
4
cycle
5
cycle
6
cycle
7
1
cycle
8
z
z
z
z
cycle
9
1
1
1
cycle
10
CYNSE70128
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