AT45DB021D-MH-T Atmel, AT45DB021D-MH-T Datasheet - Page 36
![IC FLASH 2MBIT 66MHZ 8UDFN](/photos/7/26/72650/8-udfn-8ma1_sml.jpg)
AT45DB021D-MH-T
Manufacturer Part Number
AT45DB021D-MH-T
Description
IC FLASH 2MBIT 66MHZ 8UDFN
Manufacturer
Atmel
Datasheet
1.AT45DB021D-SH-T.pdf
(48 pages)
Specifications of AT45DB021D-MH-T
Format - Memory
FLASH
Memory Type
DataFLASH
Memory Size
2M (1024 pages x 264 bytes)
Speed
66MHz
Interface
SPI, RapidS
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-UDFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT45DB021D-MH-T
Manufacturer:
EPCOS
Quantity:
34 000
18.
36
Figure 17-11. Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)
Read Operations
The following block diagram and waveforms illustrate the various read sequences available.
Figure 18-1. Main Memory Page Read
SI (INPUT)
Atmel AT45DB021D
SO (OUTPUT)
SI (INPUT)
CS
MAIN MEMORY
PAGE (256-/264-BYTES)
BUFFER (256-/264-BYTES)
CS
PAGE TO
represents 8 bits
BUFFER
BUFFER
Each transition
READ
CMD
CMD
FLASH MEMORY ARRAY
ADDRESS FOR BINARY PAGE SIZE
A16
PA8-7
I/O INTERFACE
SO
PA6-0, BA8
A15-A8
MAIN MEMORY
PAGE READ
PA9-7
Starts self-timed erase/program operation
A17-A8 + 8 DON'T CARE BITS
A7-A0
BINARY PAGE SIZE
BA7-0
PA6-0, X
X
4 Dummy Bytes
XXXX XX
n = 1st byte read
n+1 = 2nd byte read
X
n
n+1
3638J–DFLASH–5/10