mx25l3237d Macronix International Co., mx25l3237d Datasheet - Page 14

• Manufacturer Part Number: mx25l3237d
• Description: Serial Flash Memory
• Manufacturer: Macronix International Co.

Figure 1. Serial Modes Supported
DEVICE OPERATION
1. Before a command is issued, status register should be checked to ensure device is ready for the intended operation.
2. When incorrect command is inputted to this LSI, this LSI becomes standby mode and keeps the standby mode until
3. When correct command is inputted to this LSI, this LSI becomes active mode and keeps the active mode until next
4. Input data is latched on the rising edge of Serial Clock(SCLK) and data shifts out on the falling edge of SCLK. The
P/N: PM1393
Note:
CPOL indicates clock polarity of Serial master, CPOL=1 for SCLK high while idle, CPOL=0 for SCLK low while not
transmitting. CPHA indicates clock phase. The combination of CPOL bit and CPHA bit decides which Serial mode is
supported.
5. For the following instructions: RDID, RDSR, RDSCUR, READ, FAST_READ, 2READ, 4READ,RES, REMS, REMS2
6. During the progress of Write Status Register, Program, Erase operation, to access the memory array is neglected and
(Serial mode 0)
(Serial mode 3)
next CS# falling edge. In standby mode, SO pin of this LSI should be High-Z.
CS# rising edge.
difference of Serial mode 0 and mode 3 is shown as Figure 2.
and REMS4 the shifted-in instruction sequence is followed by a data-out sequence. After any bit of data being shifted
out, the CS# can be high. For the following instructions: WREN, WRDI, WRSR, SE, BE, CE, PP, 4PP, CP, RDP, DP,
ENSO, EXSO,and WRSCUR, the CS# must go high exactly at the byte boundary; otherwise, the instruction will be
rejected and not executed.
not affect the current operation of Write Status Register, Program, Erase.
CPOL
0
1
CPHA
0
1
SI
SO
SCLK
SCLK
MSB
shift in
14
shift out
MX25L3237D
MSB
REV. 0.02, JUN. 13, 2008