M59MR032C datasheet(21/49 Pages) STMICROELECTRONICS

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M59MR032C, M59MR032D

Table 18. Status Register Bits (1)

Note: 1. Status Register bits do not consider BINV.

2. DQ7 and DQ2 require a valid address when reading status information.

Status

DQ7 (2)

DQ6

DQ5

DQ3

DQ2 (2)

In Progress

Program

DQ7

Toggle

N/A

Block Erase Timeout

Toggle

N/A

Block/Chip Erase

Toggle

N/A

Erase Suspend

Mode

Erase Suspended Block

N/A

Toggle

Non Erase Suspended Block

Automatic return to reading array data

Programming during Erase Suspend

DQ7

Toggle

N/A

Successfully/

Completed

Word Program

Automatic return to reading array data

Block/Chip Erase

Exceeded

Time Limit

Word Program

DQ7

Toggle

N/A

Block/Chip Erase

Toggle

Toggle is

failed, block is

addressed

Program in Suspend

DQ7

Toggle

N/A

POWER CONSUMPTION

Power-down

The memory provides Reset/Power-down control

input RP. The Power-down function can be acti-

vated only if the relevant Configuration Register bit

is set to ’1’. In this case, when the RP signal is

pulled at VSS the supply current drops to typically

ICC2 (see Table 28), the memory is deselected and

the outputs are in high impedance.If RP is pulled

to VSS during a Program or Erase operation, this

operation is aborted in tPLQ7V and the memory

content is no longer valid (see Reset/Power-down

input description).

Power-up

The memory Command Interface is reset on Pow-

er-up to Read Array. Either E or W must be tied to

VIH during Power-up to allow maximum security

and the possibility to write a command on the first

rising edge of W. At Power-up the device is config-

ured as:

– page mode: (CR15 = 1)

– power-down disabled: (CR10 = 0)

– BINV disabled: (CR14 = 0)

and all blocks are protected and unlocked.

Supply Rails

Normal precautions must be taken for supply volt-

age decoupling; each device in a system should

have the VDD rails decoupled with a 0.1µF capac-

itor close to the VDD, VDDQ and VSS pins. The PCB

trace widths should be sufficient to carry the re-

quired VDD program and erase currents.

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