N25Q032A13E1241F Datasheet, PDF(89/153 Page) Micron Technology – 32-Mbit 3 V, multiple I/O, 4-Kbyte subsector erase, XiP enabled, serial flash memory with 108 MHz SPI bus interface

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N25Q032A13E1241F Datasheet, PDF (89/153 Pages) Micron Technology – 32-Mbit 3 V, multiple I/O, 4-Kbyte subsector erase, XiP enabled, serial flash memory with 108 MHz SPI bus interface

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N25Q032 - 3 V

Instructions

9.2.1

Multiple I/O Read Identification protocol

The Multiple Input/Output Read Identification (MIORDID) instruction allows to read the

device identification data in the DIO-SPI protocol:

â Manufacturer identification (1 byte)

â Device identification (2 bytes)

Unlike the RDID instruction of the Extended SPI protocol, the Multiple Input/Output

instruction can not read the Unique ID code (UID) (17 bytes).

For further details on the manufacturer and device identification codes please refer to

Section 9.1.1: Read Identification (RDID).

Any Multiple Input/Output Read Identification (MIORDID) instruction while an Erase or

Program cycle is in progress, is not decoded, and has no effect on the cycle that is in

progress.

The device is first selected by driving Chip Select (S) Low. Then, the 8-bit instruction code

for the instruction is shifted in parallel on the 2 pins DQ0 and DQ1. After this, the 24-bit

device identification, stored in the memory, will be shifted out on again in parallel on DQ1

and DQ0. Each two bits are shifted out during the falling edge of Serial Clock (C).

The Read Identification (RDID) instruction is terminated by driving Chip Select (S) High at

any time during data output.

When Chip Select (S) is driven High, the device is put in the Standby Power mode. Once in

the Standby Power mode, the device waits to be selected, so that it can receive, decode and

execute instructions.

Figure 43. Multiple I/O Read Identification instruction and data-out sequence DIO-

SPI

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

AFh

MAN.

code

DEV.

code

SIZE

code

DQ0

642064206420

DQ1

753175317531

9.2.2

Read Serial Flash Discovery Parameter

The Read Serial Flash Discovery Parameter (RDSFDP) instruction allows reading the Serial

Flash Discovery Parameter area (SFDP) in the DIO-SPI protocol. The instruction

functionality is exactly the same as the Read Serial Flash Discovery Parameter instruction

of the Extended SPI protocol; the only difference is that in the DIO-SPI protocol instruction

code, address and output data are all parallelized on the two pins DQ0 and DQ1.

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Micron Technology, Inc., reserves the right to change products or specifications without notice.

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