CAT25C64 datasheet(9/16 Pages) CATALYST

9 / 16 page

CAT25C64

Doc. No. 1112, Rev. B

Characteristics subject to change without notice

SCK

HOLD

tCD

tHD

tCD

tLZ

tHZ

HIGH IMPEDANCE

Figure 9.

HOLD

HOLD Timing

Figure 8. Page Write Instruction Timing

Note: Dashed Line = mode (1, 1) – – – –

Note: Dashed Line= mode (1, 1) — — — —

SCK

ADDRESS

Data

Byte 1

012345678

23 24-31

32-39

Data

Byte 2

Data

Byte 3

Data Byte N

OPCODE

7..1

24+(N-1)x8-1..24+(N-1)x8 24+Nx8-1

DATA IN

HIGH IMPEDANCE

state and receive an instruction. After a successful byte/

page write or status register write the CAT25C64 goes into

a write disable mode.

CS must be set high after the proper

number of clock cycles to start an internal write cycle.

Access to the array during an internal write

cycle is

ignored and program-ming is continued. On power up,

SO is in a high impedance.

When powering down, the supply should be taken down

to 0V, so that the CAT25C64 will be reset when power

is ramped back up. If this is not possible, then, following

a brown-out episode, the CAT25C64 can be reset by

refreshing the contents of the Status Register (See

Application Note AN10).

tCSH

SCK

tWPS

tWPH

Figure 10.

WP Timing

Note: Dashed Line= mode (1, 1) — — — —

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