N256S08XXHDA Datasheet, PDF (8/15 Pages) AMI SEMICONDUCTOR – 256Kb Low Power Serial SRAMs 32K × 8 bit Organization

AMI Semiconductor, Inc.
Page and Burst READ Sequence
CS
N256S0818HDA/N256S0830HDA
Advance Information
SCK _{0 1 2 3 4 5 6 7 8 9 10 11 21 22 23 24 25 26 27 28 29 30 31}
Instruction
16-bit address
SI 0 0 0 0 0 0 1 1 15 14 13 12 2 1 0
Don’t Care
ADDR 1
Data Out from ADDR 1
SO
High-Z
76543210
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
Don’t Care
Data Out from ADDR 2
Data Out from ADDR 3
Data Out from ADDR n
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 ... 7 6 5 4 3 2 1 0
Page READ Sequence
SI
16-bit address
Page address (X)
Word address (Y)
SO
Data Words: sequential, at the end of the page the
address wraps back to the beginning of the page
Page X Page X Page X
Word Y Word Y+1 Word Y+2
Page X Page X
Word 31 Word 0
Page X
Word 1
Burst READ Sequence
SI
16-bit address
Page address (X)
Word address (Y)
SO
Page X
Word Y
Data Words: sequential, at the end of the page the address wraps to the beginning
of the page and continues incrementing up to the starting word address. At that
time, the address increments to the next page and the burst continues.
...
...
Page X
Word Y+1
Page X Page X
Word 31 Word 0
Page X
Word 1
Page X Page X+1 Page X+1
Word Y-1 Word Y Word Y+1
8
This is a developmental specification and is subject to change without notice.