23X640
TABLE 2-1: INSTRUCTION SET
Instruction Name Instruction Format
READ
WRITE
RDSR
WRSR
0000 0011
0000 0010
0000 0101
0000 0001
Description
Read data from memory array beginning at selected address
Write data to memory array beginning at selected address
Read STATUS register
Write STATUS register
FIGURE 2-1: BYTE READ SEQUENCE
CS
SCK
SI
SO
0 1 2 3 4 5 6 7 8 9 10 11
21 22 23 24 25 26 27 28 29 30 31
Instruction
16-bit Address
0 0 0 0 0 0 1 1 15 14 13 12
210
High-Impedance
Data Out
76543210
FIGURE 2-2: BYTE WRITE SEQUENCE
CS
SCK
SI
SO
0 1 2 3 4 5 6 7 8 9 10 11
21 22 23 24 25 26 27 28 29 30 31
Instruction
16-bit Address
Data Byte
0 0 0 0 0 0 1 0 15 14 13 12
2 1 07 6 5 4 3 2 1 0
High-Impedance
2010 Microchip Technology Inc.
DS22126D-page 7