45PE80 View Datasheet(PDF) - Micron Technology

Part Name

Description

Manufacturer

45PE80

Micron Serial NOR Flash Memory

Micron Technology 

Signal Descriptions

75MHz, Serial Peripheral Interface Flash Memory

Signal Descriptions

Table 2: Signal Descriptions

Signal

DQ0

C

S#

RESET#

W#

DQ1

VCC

VSS

Type

Input

Input

Input

Input

Input

Output

Supply

Supply

Description

Serial data: Transfers data serially into the device. DQ0 receives commands, address-

es, and data to be programmed. Values are latched on the rising edge of serial clock

(C).

Clock: Provides timing for the serial interface. Commands, addresses, or data present

at serial data input (DQ0) is latched on the rising edge of serial clock (C). Data on DQ1

changes after the falling edge of C.

Chip select: When S# is HIGH, the device is deselected and DQ1 is High-Z. Unless an

internal READ, PROGRAM, ERASE, or WRITE cycle is in progress, the device will be in

the standby power mode (not deep power-down mode). Driving S# LOW enables the

device, placing it in the active power mode. After power-up, a falling edge on S# is

required prior to the start of any command.

Reset: Provides a hardware reset for the memory. When RESET# is driven HIGH, the

device is in the normal operating mode. When RESET# is driven LOW, the device en-

ters the reset mode. In reset mode, the output is High-Z. Driving RESET# LOW while an

internal operation is in progress affects the WRITE, PROGRAM, or ERASE cycle, and da-

ta may be lost.

Write protect: Places the device in hardware protected mode when connected to VSS,

causing the first 256 pages of memory to become read-only, protected from WRITE,

PROGRAM, and ERASE operations. When W# is connected to VCC, the first 256 pages

of memory behave like the other pages.

Serial data: Transfers data serially out of the device. Data is shifted out on the falling

edge of the serial clock (C).

Supply voltage: 2.7–3.6V

Ground: Reference for VCC.

PDF: 09005aef845660e5

m45pe80.pdf - Rev. C 03/14 EN

7

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© 2011 Micron Technology, Inc. All rights reserved.

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