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AT45DB321B-RI

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32
10
AT45DB321B
2223D–DFLASH–10/02
Note: In Tables 2 and 3, an SCK mode designation of “Any” denotes any one of the four modes of operation (Inactive Clock Polarity
Low, Inactive Clock Polarity High, SPI Mode 0, or SPI Mode 3).
Table 1. Read Commands
Command SCK Mode Opcode
Continuous Array Read
Inactive Clock Polarity Low or High 68H
SPI Mode 0 or 3 E8H
Main Memory Page Read
Inactive Clock Polarity Low or High 52H
SPI Mode 0 or 3 D2H
Buffer 1 Read
Inactive Clock Polarity Low or High 54H
SPI Mode 0 or 3 D4H
Buffer 2 Read
Inactive Clock Polarity Low or High 56H
SPI Mode 0 or 3 D6H
Status Register Read
Inactive Clock Polarity Low or High 57H
SPI Mode 0 or 3 D7H
Table 2. Program and Erase Commands
Command SCK Mode Opcode
Buffer 1 Write Any 84H
Buffer 2 Write Any 87H
Buffer 1 to Main Memory Page Program with Built-in Erase Any 83H
Buffer 2 to Main Memory Page Program with Built-in Erase Any 86H
Buffer 1 to Main Memory Page Program without Built-in Erase Any 88H
Buffer 2 to Main Memory Page Program without Built-in Erase Any 89H
Page Erase Any 81H
Block Erase Any 50H
Main Memory Page Program through Buffer 1 Any 82H
Main Memory Page Program through Buffer 2 Any 85H
Table 3. Additional Commands
Command SCK Mode Opcode
Main Memory Page to Buffer 1 Transfer Any 53H
Main Memory Page to Buffer 2 Transfer Any 55H
Main Memory Page to Buffer 1 Compare Any 60H
Main Memory Page to Buffer 2 Compare Any 61H
Auto Page Rewrite through Buffer 1 Any 58H
Auto Page Rewrite through Buffer 2 Any 59H
11
AT45DB321B
2223D–DFLASH–10/02
Note: r = Reserved Bit
P = Page Address Bit
B = Byte/Buffer Address Bit
x = Don’t Care
Table 4. Detailed Bit-level Addressing Sequence
Opcode Opcode
Address Byte Address Byte Address Byte
Additional
Don’t Care
Bytes
Required
50H 01010000r PPPPPPPPPPxxxxxxxxxxxxx N/A
52H 01010010r PPPPPPPPPPPPPBBBBBBBBBB 4 Bytes
53H 01010011r PPPPPPPPPPPPPxxxxxxxxxx N/A
54H 01010100xxxxxxxxxxxxxxBBBBBBBBBB 1 Byte
55H 01010101r PPPPPPPPPPPPPxxxxxxxxxx N/A
56H 01010110xxxxxxxxxxxxxxBBBBBBBBBB 1 Byte
57H 01010111 N/A N/A N/A N/A
58H 01011000r PPPPPPPPPPPPPxxxxxxxxxx N/A
59H 01011001r PPPPPPPPPPPPPxxxxxxxxxx N/A
60H 01100000r PPPPPPPPPPPPPxxxxxxxxxx N/A
61H 01100001r PPPPPPPPPPPPPxxxxxxxxxx N/A
68H 01101000r PPPPPPPPPPPPPBBBBBBBBBB 4 Bytes
81H 10000001r PPPPPPPPPPPPPxxxxxxxxxx N/A
82H 10000010r PPPPPPPPPPPPPBBBBBBBBBB N/A
83H 10000011r PPPPPPPPPPPPPxxxxxxxxxx N/A
84H 10000100xxxxxxxxxxxxxxBBBBBBBBBB N/A
85H 10000101r PPPPPPPPPPPPPBBBBBBBBBB N/A
86H 10000110r PPPPPPPPPPPPPxxxxxxxxxx N/A
87H 10000111xxxxxxxxxxxxxxBBBBBBBBBB N/A
88H 10001000r PPPPPPPPPPPPPxxxxxxxxxx N/A
89H 10001001r PPPPPPPPPPPPPxxxxxxxxxx N/A
D2H 11010010r PPPPPPPPPPPPPBBBBBBBBBB 4 Bytes
D4H 11010100xxxxxxxxxxxxxxBBBBBBBBBB 1 Byte
D6H 11010110xxxxxxxxxxxxxxBBBBBBBBBB 1 Byte
D7H 11010111 N/A N/A N/A N/A
E8H 11101000r PPPPPPPPPPPPPBBBBBBBBBB 4 Bytes
R
eserve
d
PA
12
PA
11
PA
10
PA
9
PA8
PA7
6
5
4
PA
3
PA
2
PA
1
PA
0
BA
9
BA
8
BA7
BA6
5
4
3
BA
2
BA
1
BA
0
12
AT45DB321B
2223D–DFLASH–10/02
Note: 1. After power is applied and V
CC
is at the minimum specified datasheet value, the system should wait 20 ms before an opera-
tional mode is started.
Note: 1. I
cc1
during a buffer read is 20mA maximum.
Absolute Maximum Ratings*
Temperature under Bias ................................ -55°C to +125°C
*NOTICE: Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect device
reliability.
Storage Temperature..................................... -65°C to +150°C
All Input Voltages
(including NC Pins)
with Respect to Ground...................................-0.6V to +6.25V
All Output Voltages
with Respect to Ground.............................-0.6V to V
CC
+ 0.6V
DC and AC Operating Range
AT45DB321B
Operating Temperature (Case)
Com. 0°C to 70°C
Ind. -40°C to 85°C
V
CC
Power Supply
(1)
2.7V to 3.6V
DC Characteristics
Symbol Parameter Condition Min Typ Max Units
I
SB
Standby Current CS, RESET, WP = V
CC
, all inputs
at CMOS levels
210µA
I
CC1
(1)
Active Current, Read
Operation
f = 20 MHz; I
OUT
= 0 mA;
V
CC
= 3.6V
410mA
I
CC2
Active Current,
Program/Erase Operation
V
CC
= 3.6V 15 35 mA
I
LI
Input Load Current V
IN
= CMOS levels 1 µA
I
LO
Output Leakage Current V
I/O
= CMOS levels 1 µA
V
IL
Input Low Voltage 0.6 V
V
IH
Input High Voltage 2.0 V
V
OL
Output Low Voltage I
OL
= 1.6 mA; V
CC
= 2.7V 0.4 V
V
OH
Output High Voltage I
OH
= -100 µA V
CC
- 0.2V V
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32

AT45DB321B-RI

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IC FLASH 32M SPI 20MHZ 28SOIC
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