AI01286C

BYTE

IDENTIFIER

YES

NO

90h

READ

STATUS

YES

70h

NO

CLEAR

STATUS

YES

50h

NO

PROGRAM

SET-UP

YES

40h or

10h

NO

ERASE

SET-UP

YES

20h

NO

ERASE

COMMAND

ERROR

YES

0FFh

WAIT FOR

COMMAND

WRITE (1)

READ

STATUS

READ

ARRAY

PROGRAM

READ

STATUS

YES

READY

(2)

NO

YES

OD0h

NO

A

B

NO

Figure 14. Command Interface and Program Erase Controller Flow-diagram (a)

Notes: 1. If no command is written, the Command Interface remains in its previous valid state. Upon power-up, on exit from power-down or

2. P/E.C. status (Ready or Busy) is read on Status Register bit 7.

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M28F410, M28F420