GS8673ED18/36BK-675/625/550/500

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

Rev: 1.06 5/2012

11/31

© 2011, GSI Technology

LP NOP Timing Diagram

.

Write1

NOP1

NOP2

NOP3

NOP4

NOP5

NOP6

NOP7

NOP8

Write2

tKHDZTV(max)

tKHDZTV(min)

tKHAZTV(max)

tKHAZTV(min)

Note 5

Note 1

Note 2

Note 3

Note 4

CK, KD

CK, KD

SA

R

W

ADZT1

D

Notes:

1. The Controller initiates Write1. The ECCRAM is enabling SA and D termination.

2. The Controller initiates one NOP (NOP1) with ADZT1 Low, to allow time for Write1 to complete.

The Controller drives SA, D Low during NOP1 ~ NOP8.

3. The Controller initiates two more NOPs (NOP2 ~ NOP3) with ADZT1 High, to cause the ECCRAM to enter LP NOP mode for 2 cycles.

The ECCRAM disables SA and D termination pull ups at

↑CK in NOP4, 2 cycles after sampling ADZT1 = 1 at ↑CK in NOP2.

4. The Controller initiates five more NOPs (NOP4 ~ NOP8) with ADZT1 Low, to allow time for the ECCRAM to exit LP NOP Mode.

The ECCRAM enables SA and D termination pull ups at

↑CK in NOP6, 2 cycles after sampling ADZT1 = 0 at ↑CK in NOP4.

5. The Controller initiates Write2. The ECCRAM is enabling SA and D termination.