M25P16-VMF3T View Datasheet(PDF) - Micron Technology
Part Name
Description
MFG CO.
'M25P16-VMF3T' PDF : 62 Pages View PDF
Micron M25P16 Serial Flash Embedded Memory
READ IDENTIFICATION
READ IDENTIFICATION
The READ IDENTIFICATION command reads the following device identification data:
• Manufacturer identification (1 byte): This is assigned by JEDEC.
• Device identification (2 bytes): This is assigned by device manufacturer; the first byte
indicates memory type and the second byte indicates device memory capacity.
• A Unique ID code (UID) (17 bytes,16 available upon customer request): The first byte
contains length of data to follow; the remaining 16 bytes contain optional Customized
Factory Data (CFD) content.
Table 11: READ IDENTIFICATION Data Out Sequence
Manufacturer
Identification
20h
Device Identification
Memory Type
Memory Capacity
20h
12h
13h
14h
15h
16h
17h
18h
CFD Length
10h
UID
CFD Content
16 bytes
Note:
1. The CFD bytes are read-only and can be programmed with customer data on demand. If
customers do not make requests, the devices are shipped with all the CFD bytes pro-
grammed to zero. Parts with a top marking year and week code greater than "06/2015"
and assembled in the UFDFPN8 4mm x 3mm CFD package area are programmed with an
UID. To decode top marking year and week codes (week of assembly), see TN-12-24 "Se-
rial Flash Memory Device Marking for the M25P/PE/PX, M45PE, and N25Q Product Fami-
lies" on micron.com.
A READ IDENTIFICATION command is not decoded while an ERASE or PROGRAM cy-
cle is in progress and has no effect on a cycle in progress. The READ IDENTIFICATION
command must not be issued while the device is in DEEP POWER-DOWN mode.
The device is first selected by driving S# LOW. Then the 8-bit command code is shifted
in and content is shifted out on DQ1 as follows: the 24-bit device identification that is
stored in the memory, the 8-bit CFD length, followed by 16 bytes of CFD content. Each
bit is shifted out during the falling edge of serial clock (C).
The READ IDENTIFICATION command is terminated by driving S# HIGH at any time
during data output. When S# is driven HIGH, the device is put in the STANDBY POWER
mode and waits to be selected so that it can receive, decode, and execute commands.
PDF: 09005aef8456656c
m25p16.pdf - Rev. J 1/18 EN
23
Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2011 Micron Technology, Inc. All rights reserved.
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