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PM25LD512 Datasheet(PDF) 11 Page - List of Unclassifed Manufacturers

Part No. PM25LD512
Description  512Kbit/1 Mbit / 2 Mbit Single Operating Voltage Serial Flash Memory With 100 MHz Dual-Output SPI Bus
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Maker  ETC2 [List of Unclassifed Manufacturers]
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Pm25LD512/010/ 020
Confidential information
Chingis Technology Corp.
11
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
0
1
8
31
38
39
46
47
54
HIGH IMPEDANCE
Device ID1
Device ID1
Device ID1
SCK
CE#
SI
SO
INSTRUCTION
9
7
1010 1011b
3 Dummy Bytes




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