PM25LD010 datasheet(11/33 Pages) ETC2

11 / 33 page

Pm25LD512/010/ 020

Confidential information

Chingis Technology Corp.

DRAFT Date: August, 2010, Rev:0.4

DEVICE OPERATION (CONTINUED)

RDID COMMAND (READ PRODUCT

IDENTIFICATION) OPERATION

The Read Product Identification (RDID) instruction is

for reading out the old style of 8-bit Electronic

Signature, whose values are shown as table of ID

Definitions. This is not same as RDID or JEDEC ID

instruction. It’s not recommended to use for new

design. For new design, please use RDID or JEDEC ID

instruction.

The RDES instruction code is followed by three dummy

bytes, each bit being latched-in on SI during the rising

edge of SCK. Then the Device ID is shifted out on SO

with the MSB first, each bit been shifted out during the

falling edge of SCK. The RDES instruction is ended by

CE# goes high. The Device ID outputs repeatedly if

continuously send the additional clock cycles on SCK

while CE# is at low.

Table 11. Product Identification

Product Identification

Data

First Byte

9Dh

Manufacturer ID

Second Byte

7Fh

Device ID:

Device ID 1

Device ID 2

Pm25LD512

05h

20h

Pm25LD010

10h

21h

Pm25LD020

11h

22h

Figure 3. Read Product Identification Sequence

HIGH IMPEDANCE

Device ID1

SCK

CE#

INSTRUCTION

1010 1011b

3 Dummy Bytes

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