PM25LV020-33SC Просмотр технического описания (PDF) - PMC-Sierra, Inc

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Компоненты Описание

производитель

PM25LV020-33SC

1 Mbit / 2 Mbit / 4 Mbit 3.0 Volt-only, Serial Flash Memory With 33 MHz SPI Bus Interface

PMC-Sierra, Inc 

PMC

CONNECTION DIAGRAMS

Pm25LV010/020/040

CE#

1

SO

2

WP#

3

GND

4

8

Vcc

7

HOLD#

6

SCK

5

SI

8-Pin SOIC

CE# 1

SO 2

WP# 3

GND 4

8 Vcc

7 HOLD#

6 SCK

5 SI

8-Contact WSON

PIN DESCRIPTIONS

SYMBOL

TYPE

CE#

INPUT

SCK

SI

SO

GND

Vcc

INPUT

INPUT

OUTPUT

WP#

INPUT

HOLD#

INPUT

DESCRIPTION

Chip Enable: CE# goes low activates the devices internal circuitries for

device operation. CE# goes high deselects the devices and switches into

standby mode to reduce the power consumption. When the devices are not

selected, data will not be accepted via the serial input pin (Sl), and the

serial output pin (SO) will remain in a high impedance state.

Serial Data Clock

Serial Data Input

Serial Data Output

Ground

Device Power Supply

Write Protect: A hardware program/erase protection for all or partial of

memory array. When the WP# pin is pulled to low, whole or partial of

memory array is write protected depends on the setting of BP2, BP1 and

BP0 bits in the Status Register. When the WP# is pulled high, the devices

are not write protected.

Hold: Pause serial communication with the master device without resetting

the serial sequence.

Programmable Microelectronics Corp.

2

Issue Date: July, 2005, Rev: 1.2

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