MX25L12835F
9-5. Read Electronic Manufacturer ID & Device ID (REMS)
The REMS instruction is an alternative to the Release from Power-down/Device ID instruction that provides both the
JEDEC assigned manufacturer ID and the specific device ID.
The REMS instruction is very similar to the Release from Power-down/Device ID instruction. The instruction is initi-
ated by driving the CS# pin low and shift the instruction code "90h" followed by two dummy bytes and one bytes ad-
dress (A7~A0). After which, the Manufacturer ID for Macronix (C2h) and the Device ID are shifted out on the falling
edge of SCLK with most significant bit (MSB) first. The Device ID values are listed in "Table 6. ID Definitions". If the
one-byte address is initially set to 01h, then the device ID will be read first and then followed by the Manufacturer
ID. The Manufacturer and Device IDs can be read continuously, alternating from one to the other. The instruction is
completed by driving CS# high.
Figure 15. Read Electronic Manufacturer & Device ID (REMS) Sequence (SPI Mode only)
CS#
0
1
2
3
4
5
6
7
8
9 10
Mode 3
Mode 0
SCLK
Command
90h
2 Dummy Bytes
SI
15 14 13
3
2
1
0
High-Z
SO
CS#
47
28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46
SCLK
ADD (1)
7
6
5
4
3
2
0
1
SI
Manufacturer ID
Device ID
7
6
5
4
3
2
1
0
7
7
6
5
4
3
2
0
1
SO
MSB
MSB
MSB
Notes:
(1) ADD=00H will output the manufacturer's ID first and ADD=01H will output device ID first.
P/N: PM1795
REV. 1.0, OCT. 23, 2012
25
Macronix [ MACRONIX INTERNATIONAL ]
