CAT93C66SI datasheet(8/16 Pages) ONSEMI

No. de pieza	CAT93C66SI

Descripción Electrónicos	4 kb Microwire Serial CMOSEEPROM

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Fabricante Electrónico	ONSEMI [ON Semiconductor]

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CAT93C66, CAT93W66

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8

Erase All

Upon receiving an ERAL command (Figure 7), the CS

(Chip Select) pin must be deselected for a minimum of

tCSMIN. The falling edge of CS will start the self clocking

clear cycle of all memory locations in the device. The

clocking of the SK pin is not necessary after the device has

entered the self clocking mode. The ready/busy status of the

device can be determined by selecting the device and polling

the DO pin. Once cleared, the contents of all memory bits

return to a logical “1” state.

Write All

Upon receiving a WRAL command and data, the CS

(Chip Select) pin must be deselected for a minimum of

tCSMIN (Figure 8). The falling edge of CS will start the self

clocking data write to all memory locations in the device.

The clocking of the SK pin is not necessary after the device

has entered the self clocking mode. The ready/busy status of

the device can be determined by selecting the device and

polling the DO pin. It is not necessary for all memory

locations to be cleared before the WRAL command is

executed.

Figure 7. ERAL Instruction Timing

SK

CS

DI

DO

STANDBY

HIGH−Z

10

1

BUSY

READY

STATUS VERIFY

00

tHZ

tCS

tSV

tEW

Figure 8. WRAL Instruction Timing

STATUS VERIFY

SK

CS

DI

DO

STANDBY

HIGH−Z

10

1

BUSY

READY

0

DN

D0

tSV

tHZ

tCSMIN

tEW

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CAT93C66SI Datasheet(PDF) 8 Page - ON Semiconductor

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