OKI Semiconductor
MR27V3241L
32M
×
1–Bit Serial Production Programmed ROM (P2ROM)
FEDR27V3241L-02-H2
Issue Date: April 4, 2005
GENERAL DESCRIPTION
The MR27V3241L is a 32 Mbit Production Programmed Read-Only Memory, which is configured as
33,554,432 word
×
1-bit. The MR27V3241L supports a simple read operation using a single 3.3V power supply
and a Serial Peripheral Interface (SPI) compatible serial bus.
The MR27V3241L have data programmed and have functions tested at OKI factory. (Using the DC pins for the
programming function is NOT allowed )
FEATURES
·Read Operation
- +3.3 V power supply
- 33,554,432
×
1-bit
- Access time: 50MHz serial clock (FAST-READ)
-
20MHz serial clock (READ)
- Read Identification Instruction
- Active read current: 40 mA (FAST-READ)
-
20 mA (READ)
- Standby current
: 50 µA
- Serial Clock Input and Data Input/Output
- Input Data Format : 1-byte Command code, 3-byte address, 1-byte dummy (FAST-READ)
1-byte Command code, 3-byte address (READ)
PACKAGES
· MR27V3241L-xxxMP
- 16-pin plastic SOP (P-SOP16-375-1.27-K)
- RoHS Compliant Part Number : Please refer to page 17
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MR27V3241L / P2ROM
PIN CONFIGURATION (TOP VIEW)
NC
1
Vcc
2
NC
3
DC
4
NC
5
NC
6
#CS
7
SO
8
16
SCLK
15
SI
14
NC
13
NC
12
NC
11
NC
10
GND
9
NC
Under Read Operation
Pin name
#CS
SI
SO
SCLK
V
CC
GND
DC
NC
Chip Select
Serial Data Input
Serial Data Output
Clock Input
Power supply voltage
Ground
Don’t care ( 0v - Vcc )
Functions under Read Operation
<for reference> Program power supply voltage Vpp under Programming operation
Non connection
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MR27V3241L / P2ROM
READ COMMAND DEFINITION
Command
1
2
3
st
Read Array (byte)
03[H]
AD1
AD2
AD3
N byte read out until #CS goes high
1
2
2
2
3
Note
nd
rd
th
4
Action
Note:
st
1. The 1 command 03[H] is a Read command
2. AD1 to AD3 are address input data
3. Data output
Details of command and address are shown as follows.
1-byte command code
READ
AD1:
AD2:
AD3:
0
X
A15
A7
0
X
A14
A6
0
A21
A13
A5
0
A20
A12
A4
0
A19
A11
A3
0
A18
A10
A2
1
A17
A9
A1
1
A16
A8
A0
3-byte address (0 to 3FFF[H])
Note:
X: Dummy bit
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MR27V3241L / P2ROM
FAST READ COMMAND DEFINITION
Command
1
2
3
st
Read Array (byte)
0B[H]
AD1
AD2
AD3
X
N byte read out until #CS goes high
1
2
2
2
3
4
Note
nd
rd
th
th
4
5
Action
Note:
1.
2.
3.
4.
The 1 command 0B[H] is a Read command
AD1 to AD3 are address input data
X is a dummy cycle
Data output
st
Details of command and address are shown as follows.
1-byte command code
FAST-READ
AD1:
AD2:
AD3:
0
X
A15
A7
0
X
A14
A6
0
A21
A13
A5
0
A20
A12
A4
1
A19
A11
A3
0
A18
A10
A2
1
A17
A9
A1
1
A16
A8
A0
3-byte address (0 to 3FFF[H])
Note:
X: Dummy bit
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Semiconductor
MR27V3241L / P2ROM
READ IDENTIFICATION COMMAND DEFINITION
Command
1
st
Read Array (byte)
9F[H]
3 byte read out
1
2
Note
Action
Note:
st
1. The 1 command 9F[H] is a Read Identification command
2. Identification output
Details of command and address are shown as follows.
1-byte command code
RDID
1
0
0
1
1
1
1
1
IDENTIFICATION DEFINITION
Manufacturer Identification
AE[H]
Device Identification
Type
41[H]
Capacity
14[H]
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