Comparison of Macronix MX25U Series with MX25R Serial NOR Flash (For 16Mb/32Mb/64Mb)

APPLICATION NOTE
Comparison of Macronix MX25U Series
with MX25R Serial NOR Flash
(For 16Mb/32Mb/64Mb)
1. Introduction
This application note compares Macronix 16Mb, 32Mb and 64Mb, 1.8V/Wide Range VCC Serial NOR
Flash. Generally, the MX25R1635F/3235F/6435F are similar with MX25U1635F/3235F/6435F and
MX25U1635E/3235E/6435E as they are pin and command compatible with the basic Read/Program/Erase
commands. MX25R1635F/3235F/6435F provides wider voltage range and lower power consumption.
The comparison covers the general features, performance, command codes, and other differences. The
document does not provide detailed information on individual devices, but highlights major differences.
The information in this document is based on the latest datasheets listed in Section "9. Reference". Newer
versions of the datasheets may override the contents of this document.
2. General Features
Macronix 16Mb/32Mb/64Mb, 1.8V/Wide Range VCC serial flash families have similar features and functions
as shown in the table below.
MX25R1635F/3235F/6435F provide wider voltage range and 4Kb x 2 of Secured OTP size.
For Block Protection, MX25R1635F/3235F/6435F and MX25U1635F/3235F/6435F and
MX25U1635E/3235E/6435E can all use BP bit to protect content in memory. But MX25R series have T/B bit
which make slight different and easier to protect than MX25U series.
Table 2-1: Key Features Comparison (16Mb)
Part Name
Operation Voltage
MX25R1635F
MX25U1635F
MX25U1635E
1.65-3.6V
1.65-2V
1.65-2V
Sector Size
4KB
4KB
4KB
Block Size
32KB/64KB
32KB/64KB
32KB/64KB
Page Size
256B
256B
256B
1.6
1.0
1.0
tVSL (Min.)
800us
800us
300us
Endurance
100K (Min.)
100K (Typ.)
100K (Typ.)
4Kb x 2
4Kb
4Kb
TB, BP3 - BP0
BP3 - BP0
BP3 - BP0
MX25R3235F
MX25U3235F
MX25U3235E
1.65-3.6V
1.65-2V
1.65-2V
Sector Size
4KB
4KB
4KB
Block Size
32KB/64KB
32KB/64KB
32KB/64KB
Page Size
256B
256B
256B
1.6
1.0
1.0
tVSL (Min.)
800us
800us
300us
Endurance
100K (Min.)
100K (Typ.)
100K (Typ.)
4Kb x 2
4Kb
4Kb
TB, BP3 - BP0
BP3 - BP0
BP3 - BP0
SFDP
Secured OTP Size
BP Bit Block Protection
Table 2-2: Key Features Comparison (32Mb)
Part Name
Operation Voltage
SFDP
Secured OTP Size
BP Bit Block Protection
P/N: AN0418
1
REV. 1, DEC. 29, 2015
APPLICATION NOTE
Comparison of Macronix MX25U Series
with MX25R Serial NOR Flash
(For 16Mb/32Mb/64Mb)
Table 2-3: Key Features Comparison (64Mb)
Part Name
MX25R6435F
MX25U6435F
MX25U6435E
1.65-3.6V
1.65-2V
1.65-2V
Sector Size
4KB
4KB
4KB
Block Size
32KB/64KB
32KB/64KB
32KB/64KB
Page Size
256B
256B
256B
1.6
1.0
1.0
tVSL (Min.)
800us
800us
300us
Endurance
100K (Min.)
100K (Typ.)
100K (Typ.)
4Kb x 2
4Kb
4Kb
TB, BP3 - BP0
BP3 - BP0
BP3 - BP0
Operation Voltage
SFDP
Secured OTP Size
BP Bit Block Protection
3. Electrical Performance
The MX25R1635F/3235F/6435F are capable of similar performance with MX25U1635F/3235F/6435F and
MX25U1635E/3235E/6435E.
Table 3-1-1: Operation Frequency (16Mb)
Part Name
1-1-1 (READ)
1-1-1 (FAST_READ)
High Performance Mode
1-1-1 (FAST_READ)
Ultra Low Power Mode
1-1-2 (DREAD)
High Performance Mode
1-1-2 (DREAD)
Ultra Low Power Mode
1-2-2 (2READ)
High Performance Mode
1-2-2 (2READ)
Ultra Low Power Mode
1-1-4 (QREAD)
High Performance Mode
1-1-4 (QREAD)
Ultra Low Power Mode
1-4-4 (4READ)
High Performance Mode
1-4-4 (4READ)
Ultra Low Power Mode
P/N: AN0418
MX25R1635F
MX25U1635F
MX25U1635E
33MHz
50MHz
33MHz
80MHz
104MHz
104MHz
8MHz
--
--
80MHz
104MHz
104MHz
8MHz
--
--
80MHz
84MHz
84MHz
8MHz
--
--
80MHz
104MHz
104MHz
8MHz
--
--
80MHz
104MHz
104MHz
8MHz
16MHz (4Mb boundary)
--
--
2
REV. 1, DEC. 29, 2015
APPLICATION NOTE
Table 3-1-2: Operation Frequency (32Mb)
Part Name
1-1-1 (READ)
1-1-1 (FAST_READ)
High Performance Mode
1-1-1 (FAST_READ)
Ultra Low Power Mode
1-1-2 (DREAD)
High Performance Mode
1-1-2 (DREAD)
Ultra Low Power Mode
1-2-2 (2READ)
High Performance Mode
1-2-2 (2READ)
Ultra Low Power Mode
1-1-4 (QREAD)
High Performance Mode
1-1-4 (QREAD)
Ultra Low Power Mode
1-4-4 (4READ)
High Performance Mode
1-4-4 (4READ)
Ultra Low Power Mode
MX25R3235F
MX25U3235F
MX25U3235E
33MHz
50MHz
33MHz
80MHz
104MHz
104MHz
8MHz
--
--
80MHz
104MHz
104MHz
8MHz
--
--
80MHz
84MHz
84MHz
8MHz
--
--
80MHz
104MHz
104MHz
8MHz
--
--
80MHz
104MHz
104MHz
8MHz
16MHz (4Mb boundary)
--
--
MX25R6435F
MX25U6435F
MX25U6435E
33MHz
50MHz
33MHz
80MHz
104MHz
104MHz
8MHz
--
--
80MHz
104MHz
104MHz
8MHz
--
--
80MHz
84MHz
84MHz
8MHz
--
--
80MHz
104MHz
104MHz
8MHz
--
--
80MHz
104MHz
104MHz
8MHz
16MHz (4Mb boundary)
--
--
Table 3-1-3: Operation Frequency (64Mb)
Part Name
1-1-1 (READ)
1-1-1 (FAST_READ)
High Performance Mode
1-1-1 (FAST_READ)
Ultra Low Power Mode
1-1-2 (DREAD)
High Performance Mode
1-1-2 (DREAD)
Ultra Low Power Mode
1-2-2 (2READ)
High Performance Mode
1-2-2 (2READ)
Ultra Low Power Mode
1-1-4 (QREAD)
High Performance Mode
1-1-4 (QREAD)
Ultra Low Power Mode
1-4-4 (4READ)
High Performance Mode
1-4-4 (4READ)
Ultra Low Power Mode
P/N: AN0418
3
REV. 1, DEC. 30, 2015
APPLICATION NOTE
Table 3-2-1: AC Characteristics (16Mb)
P/N: AN0418
Part Name
Condition
MX25R1635F
MX25U1635F
MX25U1635E
Page Program Time
High Performance Mode
Typ./Max.
0.85ms/4ms
0.5ms/1.5ms
1.2ms/3ms
Page Program Time
Ultra Low Power Mode
Typ./Max.
3.2ms/10ms
--
--
Byte Program Time
High Performance Mode
Typ./Max.
32us/100us
12us/30us
10us/30us
Byte Program Time
Ultra Low Power Mode
Typ./Max.
40us/100us
--
--
Sector Erase Time
High Performance Mode
Typ./Max.
40ms/240ms
35ms/200ms
45ms/200ms
Sector Erase Time
Ultra Low Power Mode
Typ./Max.
58ms/240ms
--
--
Block Erase (32KB)
High Performance Mode
Typ./Max.
0.24s/1.5s
0.2s/1s
0.25s/1s
Block Erase (32KB)
Ultra Low Power Mode
Typ./Max.
0.4s/1.75s
--
--
Block Erase (64KB)
High Performance Mode
Typ./Max.
0.48s/3s
0.35s/2s
0.5s/2s
Block Erase (64KB)
Ultra Low Power Mode
Typ./Max.
0.8s/3.5s
--
--
Chip Erase Time
High Performance Mode
Typ./Max.
13s/38s
10s/20s
9s/20s
Chip Erase Time
Ultra Low Power Mode
Typ./Max.
30s/60s
--
--
Write Status Register Cycle Time
High Performance Mode
Max.
30ms
40ms
40ms
Write Status Register Cycle Time
Ultra Low Power Mode
Max.
40ms
--
--
tCLQV
High Performance Mode
30pf/15pf (Max.)
8ns/6ns
8ns/6ns
8ns/6ns
tCLQV
Ultra Low Power Mode
30pf/15pf (Max.)
12ns/10ns
--
--
4
REV. 1, DEC. 30, 2015
APPLICATION NOTE
Table 3-2-2: AC Characteristics (32Mb)
P/N: AN0418
Part Name
Condition
MX25R3235F
MX25U3235F
MX25U3235E
Page Program Time
High Performance Mode
Typ./Max.
0.85ms/4ms
0.5ms/3ms
1.2ms/3ms
Page Program Time
Ultra Low Power Mode
Typ./Max.
3.2ms/10ms
--
--
Byte Program Time
High Performance Mode
Typ./Max.
32us/100us
12us/30us
10us/30us
Byte Program Time
Ultra Low Power Mode
Typ./Max.
40us/100us
--
--
Sector Erase Time
High Performance Mode
Typ./Max.
40ms/240ms
35ms/200ms
45ms/200ms
Sector Erase Time
Ultra Low Power Mode
Typ./Max.
58ms/240ms
--
--
Block Erase (32KB)
High Performance Mode
Typ./Max.
0.24s/1.5s
0.2s/1s
0.25s/1s
Block Erase (32KB)
Ultra Low Power Mode
Typ./Max.
0.4s/1.75s
--
--
Block Erase (64KB)
High Performance Mode
Typ./Max.
0.48s/3s
0.35s/2s
0.5s/2s
Block Erase (64KB)
Ultra Low Power Mode
Typ./Max.
0.8s/3.5s
--
--
Chip Erase Time
High Performance Mode
Typ./Max.
26s/76s
25s/50s
18s/40s
Chip Erase Time
Ultra Low Power Mode
Typ./Max.
60s/120s
--
--
Write Status Register Cycle Time
High Performance Mode
Max.
30ms
40ms
40ms
Write Status Register Cycle Time
Ultra Low Power Mode
Max.
40ms
--
--
tCLQV
High Performance Mode
30pf/15pf (Max.)
8ns/6ns
8ns/6ns
8ns/6ns
tCLQV
Ultra Low Power Mode
30pf/15pf (Max.)
12ns/10ns
--
--
5
REV. 1, DEC. 30, 2015
APPLICATION NOTE
Table 3-2-3: AC Characteristics (64Mb)
P/N: AN0418
Part Name
Condition
MX25R6435F
MX25U6435F
MX25U6435E
Page Program Time
High Performance Mode
Typ./Max.
0.85ms/4ms
0.5ms/3ms
1.2ms/3ms
Page Program Time
Ultra Low Power Mode
Typ./Max.
3.2ms/10ms
--
--
Byte Program Time
High Performance Mode
Typ./Max.
32us/100us
12us/30us
10us/30us
Byte Program Time
Ultra Low Power Mode
Typ./Max.
40us/100us
--
--
Sector Erase Time
High Performance Mode
Typ./Max.
40ms/240ms
35ms/200ms
45ms/200ms
Sector Erase Time
Ultra Low Power Mode
Typ./Max.
58ms/240ms
--
--
Block Erase (32KB)
High Performance Mode
Typ./Max.
0.24s/1.5s
0.2s/1s
0.25s/1s
Block Erase (32KB)
Ultra Low Power Mode
Typ./Max.
0.4s/1.75s
--
--
Block Erase (64KB)
High Performance Mode
Typ./Max.
0.48s/3s
0.35s/2s
0.5s/2s
Block Erase (64KB)
Ultra Low Power Mode
Typ./Max.
0.8s/3.5s
--
--
Chip Erase Time
High Performance Mode
Typ./Max.
50s/150s
50s/75s
36s/80s
Chip Erase Time
Ultra Low Power Mode
Typ./Max.
120s/240s
--
--
Write Status Register Cycle Time
High Performance Mode
Max.
30ms
40ms
40ms
Write Status Register Cycle Time
Ultra Low Power Mode
Max.
40ms
--
--
tCLQV
High Performance Mode
30pf/15pf
(Max.)
8ns/6ns
8ns/6ns
8ns/6ns
tCLQV
Ultra Low Power Mode
30pf/15pf
(Max.)
12ns/10ns
--
--
6
REV. 1, DEC. 30, 2015
APPLICATION NOTE
Table 3-3-1: DC Characteristics (16Mb)
P/N: AN0418
Part Name
Condition
MX25R1635F
MX25U1635F
MX25U1635E
Standby Current (ISB1)
High Performance Mode
Typ./Max.
9uA/50uA
10uA/35uA
25uA/80uA
Standby Current (ISB1)
Ultra Low Power Mode
Typ./Max.
5uA/24uA
--
--
Deep Power Down Current (ISB2)
Typ./Max.
0.1uA/0.5uA
1.5uA/15uA
2uA/15uA
Read Current (4xI/O) (ICC1)
High Performance Mode
Typ./Max
6.5mA/9mA
--/20mA
--/20mA
Read Current (4xI/O) (ICC1)
Ultra Low Power Mode
Typ./Max
2.8mA/4.5mA
--
--
Program Current (ICC2)
High Performance Mode
Typ./Max.
5.8mA/10mA
20mA/25mA
20mA/25mA
Program Current (ICC2)
Ultra Low Power Mode
Typ./Max.
3.5mA/6mA
--
--
Icc Write Status Reg. Current(ICC3)
High Performance Mode
Typ./Max.
3.5mA/10mA
10mA/20mA
10mA/15mA
Icc Write Status Reg. Current(ICC3)
Ultra Low Power Mode
Typ./Max.
3.1mA/6mA
--
--
Sector Erase Current (ICC4)
High Performance Mode
Typ./Max.
3.5mA/10mA
18mA/25mA
20mA/25mA
Sector Erase Current (ICC4)
Ultra Low Power Mode
Typ./Max.
3.1mA/6mA
--
--
Chip Erase Current (ICC5)
High Performance Mode
Typ./Max.
4mA/10mA
20mA/25mA
20mA/25mA
Chip Erase Current (ICC5)
Ultra Low Power Mode
Typ./Max.
3.1mA/6mA
--
--
7
REV. 1, DEC. 30, 2015
APPLICATION NOTE
Table 3-3-2: DC Characteristics (32Mb)
P/N: AN0418
Part Name
Condition
MX25R3235F
MX25U3235F
MX25U3235E
Standby Current (ISB1)
High Performance Mode
Typ./Max.
9uA/50uA
10uA/50uA
25uA/80uA
Standby Current (ISB1)
Ultra Low Power Mode
Typ./Max.
5uA/24uA
--
--
Deep Power Down Current (ISB2)
Typ./Max.
0.1uA/0.5uA
1.5uA/15uA
2uA/15uA
Read Current (4xI/O) (ICC1)
High Performance Mode
Typ./Max
6.5mA/9mA
--/20mA
--/20mA
Read Current (4xI/O) (ICC1)
Ultra Low Power Mode
Typ./Max
2.8mA/4.5mA
--
--
Program Current (ICC2)
High Performance Mode
Typ./Max.
5.8mA/10mA
20mA/25mA
20mA/25mA
Program Current (ICC2)
Ultra Low Power Mode
Typ./Max.
3.5mA/6mA
--
--
Icc Write Status Reg. Current (ICC3)
High Performance Mode
Typ./Max.
3.5mA/10mA
10mA/20mA
10mA/15mA
Icc Write Status Reg. Current (ICC3)
Ultra Low Power Mode
Typ./Max.
3.1mA/6mA
--
--
Sector Erase Current (ICC4)
High Performance Mode
Typ./Max.
3.5mA/10mA
18mA/25mA
20mA/25mA
Sector Erase Current (ICC4)
Ultra Low Power Mode
Typ./Max.
3.1mA/6mA
--
--
Chip Erase Current (ICC5)
High Performance Mode
Typ./Max.
4mA/10mA
20mA/25mA
20mA/25mA
Chip Erase Current (ICC5)
Ultra Low Power Mode
Typ./Max.
3.1mA/6mA
--
--
8
REV. 1, DEC. 30, 2015
APPLICATION NOTE
Table 3-3-3: DC Characteristics (64Mb)
P/N: AN0418
Part Name
Condition
MX25R6435F
MX25U6435F
MX25U6435E
Standby Current (ISB1)
High Performance Mode
Typ./Max.
9uA/50uA
15uA/50uA
25uA/80uA
Standby Current (ISB1)
Ultra Low Power Mode
Typ./Max.
5uA/24uA
--
--
Deep Power Down Current (ISB2)
Typ./Max.
0.1uA/0.5uA
1.5/15uA
2uA/15uA
Read Current (4xI/O) (ICC1)
High Performance Mode
Typ./Max
6.5mA/9mA
--/20mA
--/20mA
Read Current (4xI/O) (ICC1)
Ultra Low Power Mode
Typ./Max
2.8mA/4.5mA
--
--
Program Current (ICC2)
High Performance Mode
Typ./Max.
5.8mA/10mA
20mA/25mA
20mA/25mA
Program Current (ICC2)
Ultra Low Power Mode
Typ./Max.
3.5mA/6mA
--
--
Icc Write Status Reg. Current (ICC3)
High Performance Mode
Typ./Max.
3.5mA/10mA
10mA/20mA
10mA/20mA
Icc Write Status Reg. Current (ICC3)
Ultra Low Power Mode
Typ./Max.
3.1mA/6mA
--
--
Sector Erase Current (ICC4)
High Performance Mode
Typ./Max.
3.5mA/10mA
18mA/25mA
20mA/25mA
Sector Erase Current (ICC4)
Ultra Low Power Mode
Typ./Max.
3.1mA/6mA
--
--
Chip Erase Current (ICC5)
High Performance Mode
Typ./Max.
4mA/10mA
20mA/25mA
20mA/25mA
Chip Erase Current (ICC5)
Ultra Low Power Mode
Typ./Max.
3.1mA/6mA
--
--
9
REV. 1, DEC. 30, 2015
APPLICATION NOTE
4. Command Set
Command Set Table shows basic Read, Program, and Erase commands are supported by the
MX25R1635F/3235F/6435F with the similar command codes of MX25U1635F/3235F/6435F and
MX25U1635E/3235E/6435E. The differences are also highlighted in the following table.
Table 4: Command Set Table (16Mb/32Mb/64Mb)
Part Number
MX25R1635F/3235F/6435F
MX25U1635F/3235F/6435F
MX25U1635E/3235E/6435E
RDSR
05h
05h
05h
WRSR
01h
01h
01h
1-1-1 READ
03h
03h
03h
1-1-1 FAST READ
0Bh
0Bh
0Bh
1-1-2 DREAD
3Bh
3Bh
3Bh
1-2-2 2READ
BBh
BBh
BBh
1-1-4 QREAD
6Bh
6Bh
6Bh
1-4-4 4READ
EBh
EBh
EBh
Page Program
02h
02h
02h
Sector Erase
20h
20h
20h
Block Erase (32KB)
52h
52h
52h
Block Erase (64KB)
Chip Erase
Deep Power Down
Release from Deep
Power Down
RDSFDP
RDCR
Program / Erase
Suspend
Program / Erase
Resume
RSTEN
RST
ENSO
(Enter secured OTP)
EXSO
(Exit secured OTP)
RDSCUR
WRSCUR
D8h
D8h
D8h
60h or C7h
60h or C7h
60h or C7h
B9h
B9h
B9h
CS# toggle
ABh
ABh
5Ah
5Ah
5Ah
15h
--
--
75h or B0h
B0h
B0h
7Ah or 30h
30h
30h
66h
66h
66h
99h
99h
99h
B1h
B1h
B1h
C1h
C1h
C1h
2Bh
2Bh
2Bh
2Fh
2Fh
2Fh
P/N: AN0418
10
REV. 1, DEC. 30, 2015
APPLICATION NOTE
5. Register Comparison
The MX25R1635F/3235F/6435F Status Register bits are similar with the registers of the MX25U1635F/3235F/6435F and
MX25U1635E/3235E/6435E.
Configuration Register can be found in MX25R1635F/3235F/6435F to provide more flexible block protection.
Table 5-1: Status Register Bits
MX25R1635F/3235F/6435F
MX25U1635F/3235F/6435F
MX25U1635E/3235E/6435E
Bit 0
WIP
WIP
WIP
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
WEL
BP0
BP1
BP2
BP3
QE
SRWD Status Register Write
Protect
WEL
BP0
BP1
BP2
BP3
QE
SRWD Status Register Write
Protect
WEL
BP0
BP1
BP2
BP3
QE
SRWD Status Register Write
Protect
MX25R1635F/3235F/6435F
MX25U1635F/3235F/6435F
MX25U1635E/3235E/6435E
Bit 0
Bit 1
Reserved
Reserved
---
---
Bit 2
Reserved
TB
(Top/bottom selected)
Reserved
Reserved
Reserved
Reserved
--
--
--
--
-----
-----
MX25R1635F/3235F/6435F
MX25U1635F/3235F/6435F
MX25U1635E/3235E/6435E
Bit 0
Bit 1
Reserved
L/H Switch
---
---
Bit 2
Reserved
--
--
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Reserved
Reserved
Reserved
Reserved
Reserved
------
------
Part Number
Bit 7
Table 5-2: Configuration Register Bits-1
Part Number
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Table 5-3: Configuration Register Bits-2
Part Number
P/N: AN0418
11
REV. 1, DEC. 30, 2015
APPLICATION NOTE
Table 5-4: Security Register Bits
Part Number
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
MX25R1635F/3235F/6435F
MX25U1635F/3235F/6435F
MX25U1635E/3235E/6435E
Secured OTP Indicator bit
Secured OTP Indicator bit
Secured OTP Indicator bit
(2nd 4Kb Secured OTP)
(2nd 4Kb Secured OTP)
(2nd 4Kb Secured OTP)
0=Nonfactory lock,
0=Nonfactory lock,
0=Nonfactory lock,
1= Factory lock
1= Factory lock-1= Factory lock-LDSO
LDSO
LDSO
(Lock-down 1st 4Kb Secured OTP) (Lock-down 1st 4Kb Secured OTP) (Lock-down 1st 4Kb Secured OTP)
PSB (Program Suspend Status) PSB (Program Suspend Status) PSB (Program Suspend Status)
ESB(Erase Suspend Status)
Reserved
P_FAIL
E_FAIL
Reserved
ESB (Erase Suspend Status)
Reserved
P_FAIL
E_FAIL
WPSEL
ESB (Erase Suspend Status)
Reserved
P_FAIL
E_FAIL
WPSEL
6. Package Comparison
For detailed package information, please refer to the individual datasheet.
Table 6-1: Package Comparison (16Mb)
Part Number
MX25R1635F
MX25U1635F
MX25U1635E
150mil 8SOP
200mil 8SOP
2x3 8USON
4x4 8USON
4x3 8USON
6x5 8WSON
WLCSP
Y
Y
Y
--Y
Y
-Y
-Y
Y
Y
Y
-Y
-Y
Y
Y
Y
Table 6-2: Package Comparison (32Mb)
Part Number
MX25R3235F
MX25U3235F
MX25U3235E
150mil 8SOP
200mil 8SOP
4x4 8USON
4x3 8USON
6x5 8WSON
WLCSP
WLCSP
Y
Y
-Y
Y
Y
Y
-Y
Y
Y
Y
Y
Y
-Y
Y
Y
Y
Y
Y
Table 6-3: Package Comparison (64Mb)
P/N: AN0418
Part Number
MX25R6435F
MX25U6435F
MX25U6435E
200mil 8SOP
4x4 8USON
6x5 8WSON
WLCSP
Y
Y
Y
Y
Y
-Y
Y
--Y
--
12
REV. 1, DEC. 30, 2015
APPLICATION NOTE
7. Device Identification
The RDID instruction is for reading the 1-byte Manufacturer ID followed by the 2-byte Device ID. The REMS
instruction provides both the JEDEC assigned manufacturer ID and the specific Device ID.
Table 7-1: ID Code Comparison (16Mb)
Part Number
RDID
REMS
MX25R1635F
MX25U1635F
MX25U1635E
Manufacturer ID
C2 h
C2 h
C2 h
Memory Type
28 h
25 h
25 h
Memory Density
15 h
35 h
35 h
Manufacturer ID
C2 h
C2 h
C2 h
Device ID
15 h
35 h
35 h
MX25R3235F
MX25U3235F
MX25U3235E
Manufacturer ID
C2 h
C2 h
C2 h
Memory Type
28 h
25 h
25 h
Memory Density
16 h
36 h
36 h
Manufacturer ID
C2 h
C2 h
C2 h
Device ID
16 h
36 h
36 h
MX25R6435F
MX25U6435F
MX25U6435E
Manufacturer ID
C2 h
C2 h
C2 h
Memory Type
28 h
25 h
25 h
Memory Density
17 h
37 h
37h
Manufacturer ID
C2 h
C2 h
C2 h
Device ID
17 h
37 h
37 h
Table 7-2: ID Code Comparison (32Mb)
Part Number
RDID
REMS
Table 7-3: ID Code Comparison (64Mb)
Part Number
RDID
REMS
P/N: AN0418
13
REV. 1, DEC. 30, 2015
APPLICATION NOTE
8. BP bit Block Protection
All of the listed Macronix flash products use BP bits to select groups of memory areas for write protection.
The protection area has slight difference, so please check the following table before using.
Table 8-1-1: Block Protection (BP) with T/B bit = 0 (16Mb)
Status Register Bit
Protected Blocks
MX25R1635F
MX25U1635F
MX25U1635E
0 (none)
0 (none)
0 (none)
BP3
BP2
BP1
BP0
0
0
0
0
0
0
0
1
1 (1 block, block 31st)
1 (1 block, block 31st)
1 (1 block, block 31st)
0
0
1
0
2 (2 blocks, block 30th~31st)
2 (2 blocks, block 30th~31st)
2 (2 blocks, block 30th~31st)
0
0
1
1
3 (4blocks, block 28th~31st)
3 (4blocks, block 28th~31st)
3 (4blocks, block 28th~31st)
0
1
0
0
4 (8blocks, block 24th~31st)
4 (8blocks, block 24th~31st)
4 (8blocks, block 24th~31st)
0
1
0
1
5 (16blocks, block 16th~31st)
5 (16blocks, block 16th~31st)
5 (16blocks, block 16th~31st)
0
1
1
0
6 (32blocks, all)
6 (32blocks, all)
6 (32blocks, all)
0
1
1
1
7 (32blocks, all)
7 (32blocks, all)
7 (32blocks, all)
1
0
0
0
8 (32blocks, all)
8 (32blocks, all)
8 (32blocks, all)
1
0
0
1
9 (32blocks, all)
9 (32blocks, all)
9 (32blocks, all)
1
0
1
0
10 (32blocks, all)
10 (16blocks, block 0th~15th)
10 (16blocks, block 0th~15th)
1
0
1
1
11 (32blocks, all)
11 (24blocks, block 0th~23rd)
11 (24blocks, block 0th~23rd)
1
1
0
0
12 (32blocks, all)
12 (28blocks, block 0th~27th)
12 (28blocks, block 0th~27th)
1
1
0
1
13 (32blocks, all)
13 (30blocks, block 0th~29th)
13 (30blocks, block 0th~29th)
1
1
1
0
14 (32blocks, all)
14 (31blocks, block 0th~30th)
14 (31blocks, block 0th~30th)
1
1
1
1
15 (32blocks, all)
15 (32blocks, all)
15 (32blocks, all)
Table 8-1-2: Block Protection (BP) with T/B bit = 1 (16Mb)
Status Register Bit
P/N: AN0418
Protected Blocks
MX25R1635F
MX25U1635F
MX25U1635E
0
0 (none)
--
--
1
1 (1 block, block 0th)
--
--
1
0
2 (2 blocks, block 0th~1st)
--
--
1
1
3 (4blocks, block 0th~3rd)
--
--
1
0
0
4 (8blocks, block 0th~7th)
--
--
1
0
1
5 (16blocks, block 0th~15th)
--
--
0
1
1
0
6 (32blocks, all)
--
--
0
1
1
1
7 (32blocks, all)
--
--
1
0
0
0
8 (32blocks, all)
--
--
1
0
0
1
9 (32blocks, all)
--
--
1
0
1
0
10 (32blocks, all)
--
--
1
0
1
1
11 (32blocks, all)
--
--
1
1
0
0
12 (32blocks, all)
--
--
1
1
0
1
13 (32blocks, all)
--
--
1
1
1
0
14 (32blocks, all)
--
--
1
1
1
1
15 (32blocks, all)
--
--
BP3
BP2
BP1
BP0
0
0
0
0
0
0
0
0
0
0
0
0
14
REV. 1, DEC. 30, 2015
APPLICATION NOTE
Table 8-2-1: Block Protection (BP) with T/B bit = 0 (32Mb)
Status Register Bit
Protected Blocks
BP3
BP2
BP1
BP0
MX25R3235F
MX25U3235F
MX25U3235E
0
0
0
0
0 (none)
0 (none)
0 (none)
0
0
0
1
1 (1 block, block 63rd)
1 (1 block, block 63rd)
1 (1 block, block 63rd)
0
0
1
0
2 (2 blocks, block 62nd~63rd)
2 (2 blocks, block 62nd~63rd)
2 (2 blocks, block 62nd~63rd)
0
0
1
1
3 (4blocks, block 60th~63rd)
3 (4blocks, block 60th~63rd)
3 (4blocks, block 60th~63rd)
0
1
0
0
4 (8blocks, block 56th~63rd)
4 (8blocks, block 56th~63rd)
4 (8blocks, block 56th~63rd)
0
1
0
1
5 (16blocks, block 48th~63rd)
5 (16blocks, block 48th~63rd)
5 (16blocks, block 48th~63rd)
0
1
1
0
6 (32blocks 32nd~63rd)
6 (32blocks 32nd~63rd)
6 (32blocks 32nd~63rd)
0
1
1
1
7 (64blocks, all)
7 (64blocks, all)
7 (64blocks, all)
1
0
0
0
8 (64blocks, all)
8 (64blocks, all)
8 (64blocks, all)
1
0
0
1
9 (64blocks, all)
9 (32blocks, 0th~31st)
9 (32blocks, 0th~31st)
1
0
1
0
10 (64blocks, all)
10 (48blocks, block 0th~47th)
10 (48blocks, block 0th~47th)
1
0
1
1
11 (64blocks, all)
11 (56blocks, block 0th~55th)
11 (56blocks, block 0th~55th)
1
1
0
0
12 (64blocks, all)
12 (60blocks, block 0th~59th)
12 (60blocks, block 0th~59th)
1
1
0
1
13 (64blocks, all)
13 (62blocks, block 0th~61st)
13 (62blocks, block 0th~61st)
1
1
1
0
14 (64blocks, all)
14 (63blocks, block 0th~62nd)
14 (63blocks, block 0th~62nd)
1
1
1
1
15 (64blocks, all)
15 (64blocks, all)
15 (64blocks, all)
Table 8-2-2: Block Protection (BP) with T/B bit = 1 (32Mb)
Status Register Bit
P/N: AN0418
Protected Blocks
MX25R3235F
MX25U3235F
MX25U3235E
0
0 (none)
--
--
1
1 (1 block, block 0th)
--
--
1
0
2 (2 blocks, block 0th~1st)
--
--
1
1
3 (4blocks, block 0th~3rd)
--
--
1
0
0
4 (8blocks, block 0th~7th)
--
--
1
0
1
5 (16blocks, block 0th~15th)
--
--
0
1
1
0
6 (32blocks 0th~31st)
--
--
0
1
1
1
7 (64blocks, all)
--
--
1
0
0
0
8 (64blocks, all)
--
--
1
0
0
1
9 (64blocks, all)
--
--
1
0
1
0
10 (64blocks, all)
--
--
1
0
1
1
11 (64blocks, all)
--
--
1
1
0
0
12 (64blocks, all)
--
--
1
1
0
1
13 (64blocks, all)
--
--
1
1
1
0
14 (64blocks, all)
--
--
1
1
1
1
15 (64blocks, all)
--
--
BP3
BP2
BP1
BP0
0
0
0
0
0
0
0
0
0
0
0
0
15
REV. 1, DEC. 30, 2015
APPLICATION NOTE
Table 8-3-1: Block Protection (BP) with T/B bit = 0 (64Mb)
Status Register Bit
Protected Blocks
BP3
BP2
BP1
BP0
MX25R6435F
MX25U6435F
MX25U6435E
0
0
0
0
0 (none)
0 (none)
0 (none)
0
0
0
1
1 (1 block, block 127th)
1 (1 block, block 127th)
1 (1 block, block 127th)
0
0
1
0
2 (2 blocks, block 126th~127th)
2 (2 blocks, block 126th~127th)
2 (2 blocks, block 126th~127th)
0
0
1
1
3 (4blocks, block 124th~127th)
3 (4blocks, block 124th~127th)
3 (4blocks, block 124th~127th)
0
1
0
0
4 (8blocks, block 120th~127th)
4 (8blocks, block 120th~127th)
4 (8blocks, block 120th~127th)
0
1
0
1
0
1
1
0
6 (32blocks 96th~127th)
6 (32blocks 96th~127th)
6 (32blocks 96th~127th)
0
1
1
1
7 (64blocks, 64th~127th)
7 (64blocks, 64th~127th)
7 (64blocks, 64th~127th)
1
0
0
0
8 (128blocks, all)
8 (64blocks, 0th~63th)
8 (64blocks, 0th~63th)
1
0
0
1
9 (128blocks, all)
9 (96blocks, 0th~95th)
9 (96blocks, 0th~95th)
1
0
1
0
10 (128blocks, all)
10 (112blocks, block 0th~111st)
10 (112blocks, block 0th~111st)
1
0
1
1
11 (128blocks, all)
11 (120blocks, block 0th~119th)
11 (120blocks, block 0th~119th)
1
1
0
0
12 (128blocks, all)
12 (124blocks, block 0th~123rd)
12 (124blocks, block 0th~123rd)
1
1
0
1
13 (128blocks, all)
13 (126blocks, block 0th~125th)
13 (126blocks, block 0th~125th)
1
1
1
0
14 (128blocks, all)
14 (127blocks, block 0th~126th)
14 (127blocks, block 0th~126th)
1
1
1
1
15 (128blocks, all)
15 (128blocks, all)
15 (128blocks, all)
5 (16blocks, block 112nd ~127th ) 5 (16blocks, block 112nd ~127th ) 5 (16blocks, block 112nd ~127th )
Table 8-3-2: Block Protection (BP) with T/B bit = 1 (64Mb)
Status Register Bit
P/N: AN0418
Protected Blocks
MX25R6435F
MX25U6435F
MX25U6435E
0
0 (none)
--
--
1
1 (1 block, block 0th)
--
--
1
0
2 (2 blocks, block 0th~1st)
--
--
0
1
1
3 (4blocks, block 0th~3rd)
--
--
1
0
0
4 (8blocks, block 0th~7th)
--
--
0
1
0
1
5 (16blocks, block 0th~15th)
--
--
0
1
1
0
6 (32blocks 0th~31st)
--
--
0
1
1
1
7 (64blocks, 0th~63rd)
--
--
1
0
0
0
8 (128blocks, all)
--
--
1
0
0
1
9 (128blocks, all)
--
--
1
0
1
0
10 (128blocks, all)
--
--
1
0
1
1
11 (128blocks, all)
--
--
1
1
0
0
12 (128blocks, all)
--
--
1
1
0
1
13 (128blocks, all)
--
--
1
1
1
0
14 (128blocks, all)
--
--
1
1
1
1
15 (128blocks, all)
--
--
BP3
BP2
BP1
BP0
0
0
0
0
0
0
0
0
0
0
16
REV. 1, DEC. 30, 2015
APPLICATION NOTE
9. Reference
The table below shows the datasheet versions used for comparison in this application note. For the most
current, detailed specification, please refer to the Macronix Website at http://www.macronix.com/ or contact
Macronix sales.
Table 9. Datasheet Versions
Datasheet
Location
Date Issued
Versions
MX25R1635F
Website
REV. 1.2
OCT. 07, 2015
MX25R3235F
Website
REV. 1.2
SEP. 18, 2015
MX25R6435F
Website
REV. 1.2
OCT. 16, 2015
MX25U1635E
Website
REV. 2.0
APR. 22, 2014
MX25U1635F
Website
REV. 1.5
MAR. 17, 2015
MX25U3235E
Website
REV. 1.9
NOV. 11, 2013
MX25U3235F
Website
REV. 1.4
SEP. 25, 2015
MX25U6435E
Website
REV. 1.5,
NOV. 07, 2013
MX25U6435F
Website
REV. 1.4
MAY 07, 2014
10. Revision History
Table 10. Revision History
P/N: AN0418
Revision No.
Description
Page
Date
REV. 1
Initial Release
ALL
DEC. 30, 2015
17
REV. 1, DEC. 30, 2015
APPLICATION NOTE
Except for customized products which have been expressly identified in the applicable agreement, Macronix's products
are designed, developed, and/or manufactured for ordinary business, industrial, personal, and/or household applications
only, and not for use in any applications which may, directly or indirectly, cause death, personal injury, or severe property
damages. In the event Macronix products are used in contradicted to their target usage above, the buyer shall take any
and all actions to ensure said Macronix's product qualified for its actual use in accordance with the applicable laws and
regulations; and Macronix as well as it’s suppliers and/or distributors shall be released from any and all liability arisen
therefrom.
Copyright© Macronix International Co., Ltd. 2015. All rights reserved, including the trademarks and tradename thereof,
such as Macronix, MXIC, MXIC Logo, MX Logo, Integrated Solutions Provider, NBit, Nbit, NBiit, Macronix NBit, eLite-Flash,
HybridNVM, HybridFlash, XtraROM, Phines, KH Logo, BE-SONOS, KSMC, Kingtech, MXSMIO, Macronix vEE, Macronix
MAP, Rich Audio, Rich Book, Rich TV, and FitCAM. The names and brands of third party referred thereto (if any) are for
identification purposes only.
For the contact and order information, please visit Macronix’s Web site at: http://www.macronix.com
MACRONIX INTERNATIONAL CO., LTD. reserves the right to change product and specifications without notice.
P/N: AN0418
18
REV. 1, DEC. 30, 2015
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