25L1605DM2C View Datasheet(PDF) - Macronix International
Part Name
Description
MFG CO.
25L1605DM2C
Macronix International
'25L1605DM2C' PDF : 56 Pages View PDF
MX25L1605D
MX25L3205D
MX25L6405D
2) Software method-II: by waiting for a tBP time out to determine if it may load next valid command or not.
3) Hardware method: by writing ESRY (enable SO to output RY/BY#) instruction to detect the completion of a program
cycle during CP mode. The ESRY instruction must be executed before CP mode execution. Once it is enable in CP
mode, the CS# goes low will drive out the RY/BY# status on SO, "0" indicates busy stage, "1" indicates ready stage,
SO pin outputs tri-state if CS# goes high. DSRY (disable SO to output RY/BY#) instruction to disable the SO to output
RY/BY# and return to status register data output during CP mode. Please note that the ESRY/DSRY command are not
accepted unless the completion of CP mode.
(14) Deep Power-down (DP)
The Deep Power-down (DP) instruction is for setting the device on the minimizing the power consumption (to entering the
Deep Power-down mode), the standby current is reduced from ISB1 to ISB2). The Deep Power-down mode requires the
Deep Power-down (DP) instruction to enter, during the Deep Power-down mode, the device is not active and all Write/
Program/Erase instruction are ignored. When CS# goes high, it's only in standby mode not deep power-down mode. It's
different from Standby mode.
The sequence of issuing DP instruction is: CS# goes low-> sending DP instruction code-> CS# goes high. (see Figure
25)
Once the DP instruction is set, all instruction will be ignored except the Release from Deep Power-down mode (RDP) and
Read Electronic Signature (RES) instruction. (those instructions allow the ID being reading out). When Power-down, the
deep power-down mode automatically stops, and when power-up, the device automatically is in standby mode. For RDP
instruction the CS# must go high exactly at the byte boundary (the latest eighth bit of instruction code been latched-in);
otherwise, the instruction will not executed. As soon as Chip Select (CS#) goes high, a delay of tDP is required before
entering the Deep Power-down mode and reducing the current to ISB2.
(15) Release from Deep Power-down (RDP), Read Electronic Signature (RES)
The Release from Deep Power-down (RDP) instruction is terminated by driving Chip Select (CS#) High. When Chip Select
(CS#) is driven High, the device is put in the Stand-by Power mode. If the device was not previously in the Deep Power-
down mode, the transition to the Stand-by Power mode is immediate. If the device was previously in the Deep Power-down
mode, though, the transition to the Stand-by Power mode is delayed by tRES2, and Chip Select (CS#) must remain High
for at least tRES2(max), as specified in Table 6. Once in the Stand-by Power mode, the device waits to be selected, so
that it can receive, decode and execute instructions.
RES instruction is for reading out the old style of 8-bit Electronic Signature, whose values are shown as table of ID
Definitions. This is not the same as RDID instruction. It is not recommended to use for new design. For new design, please
use RDID instruction. Even in Deep power-down mode, the RDP and RES are also allowed to be executed, only except
the device is in progress of program/erase/write cycle; there's no effect on the current program/erase/write cycle in
progress.
The sequence is shown as Figure 26,27.
The RES instruction is ended by CS# goes high after the ID been read out at least once. The ID outputs repeatedly if
continuously send the additional clock cycles on SCLK while CS# is at low. If the device was not previously in Deep Power-
down mode, the device transition to standby mode is immediate. If the device was previously in Deep Power-down mode,
there's a delay of tRES2 to transit to standby mode, and CS# must remain to high at least tRES2(max). Once in the standby
mode, the device waits to be selected, so it can be receive, decode, and execute instruction.
The RDP instruction is for releasing from Deep Power Down Mode.
P/N: PM1290
REV. 1.4, OCT. 01, 2008
24
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