PM25LV010-33QCE Просмотр технического описания (PDF) - PMC-Sierra, Inc

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Компоненты Описание

производитель

PM25LV010-33QCE

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

PMC-Sierra, Inc 

PMC

Pm25LV010/020/040

DEVICE OPERATION (CONTINUED)

READ PRODUCT IDENTIFICATION OPERATION

Table 9. Product Identification

The Read Product Identification (RDID) instruction al-

lows the user to read the manufacturer and product ID of

the devices. Refer to Table 9 Product Identification for

PMC manufacturer ID and device ID. The RDID instruc-

tion code is followed by three dummy bytes, each bit

being latched-in on SI during the rising edge of SCK.

Then the first manufacturer ID (9Dh) is shifted out on SO

with the MSB first, followed by the device ID and the

second manufacturer ID (7Fh), each bit been shifted out

during the falling edge of SCK. If the CE# stays low after

the last bit of second manufacturer ID is shifted out, the

manufacturer ID and device ID will be looping until the

pulled high of CE# signal.

Product Identification

Manufacturer ID

First Byte

Second Byte

Device ID:

Pm25LV010

Pm25LV020

Pm25LV040

Data

9Dh

7Fh

7Ch

7Dh

7Eh

Figure 3. Read Product Identification Sequence

CE#

01

78 9

31

38 39

46 47

54

SCK

INSTRUCTION 3 Dummy Bytes

SI

1010 1011b

HIGH IMPEDANCE

SO

Manufacture ID1

Device ID

Manufacture ID2

Programmable Microelectronics Corp.

11

Issue Date: July, 2005, Rev: 1.2

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