PA28F400BVB120 Intel, PA28F400BVB120 Datasheet - Page 19

• Manufacturer Part Number: PA28F400BVB120
• Manufacturer: Intel

Specifications of PA28F400BVB120

• Density: 4Mb
• Access Time (max): 120ns
• Interface Type: Parallel
• Boot Type: Bottom
• Address Bus: 19/18Bit
• Operating Supply Voltage (typ): 3.3/5V
• Operating Temp Range: 0C to 70C
• Package Type: SOP
• Sync/async: Asynchronous
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 3/4.5V
• Operating Supply Voltage (max): 3.6/5.5V
• Word Size: 8/16Bit
• Number Of Words: 512K/256K
• Supply Current: 65mA
• Mounting: Surface Mount
• Pin Count: 44
• Lead Free Status / Rohs Status: Not Compliant

ADDRESS
BA = Block Address
IA = Identifier Address
PA = Program Address
X = Don’t Care
NOTES:
1.
2.
3.
4.
5.
6.
7.
8.
Code Device Mode
Read Array
Intelligent Identifier
Read Status Register
Clear Status Register
Word/Byte Program
Alternate Word/Byte
Program
Block Erase/Confirm
Erase Suspend
Erase Resume
50
90
SEE NEW DESIGN RECOMMENDATIONS
Bus operations are defined in Tables 3 and 4.
IA = Identifier Address: A
SRD - Data read from status register.
IID = Intelligent Identifier Data. Following the Intelligent Identifier command, two read operations access manufacturer and
device codes.
BA = Address within the block being erased.
PA = Address to be programmed. PD = Data to be programmed at location PA.
Either 40H or 10H commands is valid.
When writing commands to the device, the upper data bus [DQ
minimize current draw.
Clear Status
Command
Intelligent
Identifier
Register
The WSM can only set the program status and erase status bits in the status
register to “1;” it cannot clear them to “0.”
The status register operates in this fashion for two reasons. The first is to give the
host CPU the flexibility to read the status bits at any time. Second, when
programming a string of bytes, a single status register query after programming the
string may be more efficient, since it will return the accumulated error status of the
entire string. See Section 3.3.2.1.
Puts the device into the intelligent identifier read mode, so that reading the device
will output the manufacturer and device codes. (A
A
Table 6. Command Codes and Descriptions (Continued)
0
0
= 0 for manufacturer code, A
= 1 for device, all other address inputs are ignored). See Section 3.2.2.
Note
2,4
6,7
6,7
Table 7. Command Bus Definitions
8
1
3
5
DATA
SRD = Status Register Data
IID = Identifier Data
PD = Program Data
Oper
Write
Write
Write
Write
Write
Write
Write
Write
Write
First Bus Cycle
0
= 1 for device code.
Addr
PA
PA
BA
4-MBIT SmartVoltage BOOT BLOCK FAMILY
X
X
X
X
X
X
8
–DQ
Decryption
15
] = X (28F400 only) which is either V
Data
D0H
FFH
B0H
90H
70H
50H
40H
10H
20H
0
= 0 for manufacturer,
Read
Read
Oper
Write
Write
Write
Second Bus Cycle
Addr
PA
PA
BA
IA
X
IL
or V
Data
SRD
D0H
IH
IID
PD
PD
, to
19