FM25C160B(2014) Просмотр технического описания (PDF) - Cypress Semiconductor

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FM25C160B
(Rev.:2014)

16-Kbit (2 K × 8) Serial (SPI) Automotive F-RAM

Cypress Semiconductor 

FM25C160B

CS

SCK

SI

SO

Figure 10. Memory Write (WREN not shown)

0 1 2 34 5 670 1 23 4 56 7

12 13 14 15 0 1 2 3 4 5 6 7

Opcode

11-bit Address

Data

0 0 0 0 0 0 1 0 X X X X X A10 A9 A8

MSB

HI-Z

A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0

LSB MSB

LSB

Figure 11. Memory Read

CS

SCK

0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 12 13 14 15 0 1 2 3 4 5 6 7

Opcode

11-bit Address

SI

0 0 0 0 0 0 1 1 X X X X X A10 A9 A8

A3 A2 A1 A0

MSB

LSB

Data

HI-Z

SO

D7 D6 D5 D4 D3 D2 D1 D0

MSB

LSB

HOLD Pin Operation

The HOLD pin can be used to interrupt a serial operation without

aborting it. If the bus master pulls the HOLD pin LOW while SCK

is LOW, the current operation will pause. Taking the HOLD pin

HIGH while SCK is LOW will resume an operation. The

transitions of HOLD must occur while SCK is LOW, but the SCK

and CS pin can toggle during a hold state.

Figure 12. HOLD Operation [2]

CS

SCK

HOLD

SI

VALID IN

VALID IN

SO

Note

2. Figure shows HOLD operation for input mode and output mode.

Document Number: 001-86150 Rev. *A

Page 9 of 20

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