MR4A16BYS35 Everspin Technologies, MR4A16BYS35 Datasheet - Page 11

• Manufacturer Part Number: MR4A16BYS35
• Description: NVRAM 16MB 3.3V 35ns 1Mx16 Parallel MRAM
• Manufacturer: Everspin Technologies

Specifications of MR4A16BYS35

• Rohs: yes
• Data Bus Width: 16 bit
• Memory Size: 16 Mbit
• Organization: 1 M x 16
• Interface Type: Parallel
• Access Time: 35 ns
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 3 V
• Operating Current: 110 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Package / Case: TSOP-54
• Mounting Style: SMD/SMT

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Copyright © Everspin Technologies 2012
Timing Specifications
All write occurs during the overlap of E low and W low. Power supplies must be properly grounded and decoupled and bus
contention conditions must be minimized or eliminated during read and write cycles. If G goes low at the same time or after W
goes low, the output will remain in a high impedance state. After W, E or UB/LB has been brought high, the signal must remain
in steady-state high for a minimum of 2 ns. If both byte control signals are asserted, the two signals must have no more than 2
ns skew between them. The minimum time between E being asserted low in one cycle to E being asserted low in a subsequent
cycle is the same as the minimum cycle time allowed for the device.
All write cycle timings are referenced from the last valid address to the first transition address.
Symbol
t
t
t
t
t
t
t
t
t
t
t
BLWH
BLWH
DVBH
BHDX
AVBH
AVBH
BHAX
AVAV
AVBL
BLEH
BLEH
UB, LB (BYTE ENABLED)
W (WRITE ENABLE)
E (CHIP ENABLE)
Q (DATA OUT)
Parameter
Write cycle time
Address set-up time
Address valid to end of write (G high)
Address valid to end of write (G low)
Write pulse width (G high)
Write pulse width (G low)
Data valid to end of write
Data hold time
Write recovery time
A (ADDRESS)
D (DATA IN)
Table 3.6 Write Cycle Timing 3 (LB/UB Controlled)
Figure 3.6 Write Cycle Timing 3 (LB/UB Controlled)
2
Hi -Z
t
AVBL
t
AVEH
t
AVAV
11
t
t
BLEH
BLWH
Hi -Z
t
DVBH
Data Valid
Min
35
20
20
15
15
10
12
0
0
1
MR4A16B Rev. 8 8/2012
t
t
BHDX
BHAX
Max
MR4A16B
-
-
-
-
-
-
-
-
-
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns