Datasheet

23A1024/23LC1024

DS20005142B-page 10  2012-2013 Microchip Technology Inc.

2.5 Read Mode Register Instruction

(RDMR)

The Read Mode Register instruction (RDMR) provides

access to the MODE register. The MODE register may

be read at any time. The MODE register is formatted as

follows:

TABLE 2-2: MODE REGISTER

The mode bits indicate the operating mode of the

SRAM. The possible modes of operation are:

0 0 = Byte mode

1 0 = Page mode

0 1 = Sequential mode (default operation)

1 1 = Reserved

Bits 0 through 5 are reserved and should always be set

to ‘0’.

See Figure 2-7 for the RDMR timing sequence.

FIGURE 2-7: READ MODE REGISTER TIMING SEQUENCE (RDMR)

76543210

W/R W/R – – – – – –

MODE MODE 00000 0

W/R = writable/readable

9101112131415

11000000

7654 2 10

Instruction

Data from MODE Register

High-Impedance

SCK

0 2345671