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29F1610A

16M-BIT [2M x8/1M x16] CMOS SINGLE VOLTAGE FLASH EEPROM

Macronix International 

MX29F1610A

WRITE OPERATIONS

Commands are written to the COMMAND INTERFACE

REGISTER (CIR) using standard microprocessor write

timings. The CIR serves as the interface between the

microprocessor and the internal chip operation. The CIR

can decipher Read Array, Read Silicon ID, Erase and

Program command. In the event of a read command, the

CIR simply points the read path at either the array or the

silicon ID, depending on the specific read command

given. For a program or erase cycle, the CIR informs the

write state machine that a program or erase has been

requested. During a program cycle, the write state

machine will control the program sequences and the CIR

will only respond to status reads. During a sector/chip

erase cycle, the CIR will respond to status reads and

erase suspend. After the write state machine has

completed its task, it will allow the CIR to respond to its full

command set. The CIR stays at read status register

mode until the microprocessor issues another valid

command sequence.

Device operations are selected by writing commands into

the CIR. Table 3 below defines 16 Mbit flash family

command.

TABLE 3. COMMAND DEFINITIONS

Command

Sequence

Bus Write

Cycles Req'd

First Bus

Write Cycle

Addr

Data

Second Bus

Write Cycle

Addr

Data

Third Bus

Write Cycle

Addr

Data

Fourth Bus

Addr

Read/Write Cycle Data

Fifth Bus

Write Cycle

Sixth Bus

Write Cycle

Addr

Data

Addr

Data

Read/

Reset

4

Silicon Page/Byte Chip

ID Read Program Erase

4

4

6

Sector Erase Erase Read

Clear

Erase Suspend Resume Status Reg. Status Reg.

6

1

1

4

3

5555H

AAH

5555H 5555H 5555H

AAH

AAH

AAH

5555H

AAH

XXXX

B0H

2AAAH 2AAAH 2AAAH 2AAAH 2AAAH

55H

55H

55H

55H

55H

5555H

F0H

5555H 5555H 5555H

90H

A0H

80H

5555H

80H

RA 00H/01H PA

RD C2H/FAH PD

(FBH)

5555H

AAH

5555H

AAH

2AAAH 2AAAH

55H

55H

5555H

SA

10H

30H

XXXX

D0H

5555H

AAH

2AAAH

55H

5555H

70H

X

SRD

5555H

AAH

2AAAH

55H

5555H

50H

P/N: PM0506

REV.1.7, JUN. 15, 2001

6

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