GPR26L160A

© Generalplus Technology Inc.

Proprietary & Confidential

5

Aug. 13, 2009

Version: 1.4

6. SIGNAL DESCRIPTION

6.1. Serial Data Output (Q)

This output signal is used to transfer data serially out of the device.

Data is shifted out on the falling edge of Serial Clock (C).

Serial Data Input (D).

This input signal is used to transfer data

serially into the device.

It receives instructions, addresses, and

the data to be programmed.

Values are latched on the rising

edge of Serial Clock (C).

6.2. Serial Clock (C)

This input signal provides the timing of the serial interface.

Instructions, addresses, or data present at Serial Data Input (D)

are latched on the rising edge of Serial Clock (C).

Data on Serial

Data Output (Q) changes after the falling edge of Serial Clock (C).

6.3. Chip Select (SB)

When this input signal is High, the device is deselected.

Driving

Chip Select (SB) Low enables the device, placing it in the active

power mode.

After Power-up, a falling edge on Chip Select (SB)

is required prior to the start of any instruction.

6.4. Hold (HOLDB)

The

Hold

(HOLDB)

signal

is

used

to

pause

any

serial

communications with the device without deselecting the device.

During the Hold condition, the Serial Data Output (Q) is high

impedance, and Serial Data Input (D) and Serial Clock (C) are

Don't Care.

To start the Hold condition, the device must be selected, with Chip

Select (SB) driven Low.