A25L16P Series

PRELIMINARY

(April, 2007, Version 0.6)

6

AMIC Technology Corp.

Table 1. Protected Area Sizes

A25L16PT Top Boot Block

Status Register Content

Memory Content

BP2 Bit

BP1 Bit

BP0 Bit

Protected Area

Unprotected Area

0

0

0

none

All sectors

1

1

1

All sectors (32 sectors: 0 to 31)

none

Note: 1. The device is ready to accept a Bulk Erase instruction if, and only if, all Block Protect (BP2, BP1, BP0) are 0.

2. The sector 31 include sector 31-0, sector 31-1, sector 31-2, sector 31-3 and sector 31-4.

A25L16PU Bottom Boot Block

Status Register Content

Memory Content

BP2 Bit

BP1 Bit

BP0 Bit

Protected Area

Unprotected Area

0

0

0

none

All sectors

1

1

1

All sectors (32 sectors: 0 to 31)

none

Note: 1. The device is ready to accept a Bulk Erase instruction if, and only if, all Block Protect (BP2, BP1, BP0) are 0.

2. The sector 0 include sector 0-0, sector 0-1, sector 0-2, sector 0-3 and sector 0-4.

Hold Condition

The Hold (

communications with the device without resetting the

clocking sequence. However, taking this signal Low does not

terminate any Write Status Register, Program or Erase cycle

that is currently in progress.

To enter the Hold condition, the device must be selected,

with Chip Select (

The Hold condition starts on the falling edge of the Hold

(

(C) being Low (as shown in Figure 3.).

The Hold condition ends on the rising edge of the Hold

(

(C) being Low.

If the falling edge does not coincide with Serial Clock (C)

being Low, the Hold condition starts after Serial Clock (C)

next goes Low. Similarly, if the rising edge does not coincide

with Serial Clock (C) being Low, the Hold condition ends

after Serial Clock (C) next goes Low. This is shown in Figure

3.

During the Hold condition, the Serial Data Output (DO) is

high impedance, and Serial Data Input (DIO) and Serial

Clock (C) are Don’t Care.

Normally, the device is kept selected, with Chip Select (

driven Low, for the whole duration of the Hold condition. This

is to ensure that the state of the internal logic remains

unchanged from the moment of entering the Hold condition.

If Chip Select (

condition, this has the effect of resetting the internal logic of

the device. To restart communication with the device, it is

necessary to drive Hold (

Chip Select (

back to the Hold condition.

Figure 3. Hold Condition Activation

Hold

Condition

(standard use)

HOLD

C

Hold

Condition

(non-standard use)