AT45DB161E-SSHD-B Adesto Technologies, AT45DB161E-SSHD-B Datasheet - Page 50
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AT45DB161E-SSHD-B
Manufacturer Part Number
AT45DB161E-SSHD-B
Description
Flash 16M 2.5-3.6V 85Mhz Serial Flash
Manufacturer
Adesto Technologies
Datasheet
1.AT45DB161E-SHD-B.pdf
(72 pages)
Specifications of AT45DB161E-SSHD-B
Rohs
yes
Data Bus Width
8 bit
Memory Type
Data Flash
Memory Size
16 Mbit
Architecture
Flexible, Uniform Erase
Timing Type
Synchronous
Interface Type
SPI
Supply Voltage - Max
3.6 V
Supply Voltage - Min
2.5 V
Maximum Operating Current
26 mA
Operating Temperature
- 40 C to + 85 C
Mounting Style
SMD/SMT
Package / Case
SOIC-8
Factory Pack Quantity
100
21.
Utilizing the RapidS Function
To take advantage of the RapidS function's ability to operate at higher clock frequencies, a full clock cycle must be used
to transmit data back and forth across the serial bus. The DataFlash is designed to always clock its data out on the falling
edge of the SCK signal and clock data in on the rising edge of SCK.
For full clock cycle operation to be achieved, when the DataFlash is clocking data out on the falling edge of SCK, the host
controller should wait until the next falling edge of SCK to latch the data in. Similarly, the host controller should clock its
data out on the rising edge of SCK in order to give the DataFlash a full clock cycle to latch the incoming data in on the
next rising edge of SCK.
Figure 21-1. RapidS Mode
Slave
MOSI = Master Out, Slave In
MISO = Master In, Slave Out
The Master is the host controller and the Slave is the DataFlash.
The Master always clocks data out on the rising edge of SCK and always clocks data in on the falling edge of SCK.
The Slave always clocks data out on the falling edge of SCK and always clocks data in on the rising edge of SCK.
A.
B.
C. Master clocks out second bit of BYTE-MOSI on the same rising edge of SCK
D. Last bit of BYTE-MOSI is clocked out from the Master
E.
F.
G. Master clocks in first bit of BYTE-SO
H. Slave clocks out second bit of BYTE-SO
I.
MOSI
MISO
SCK
Master clocks out first bit of BYTE-MOSI on the rising edge of SCK
Slave clocks in first bit of BYTE-MOSI on the next rising edge of SCK
Last bit of BYTE-MOSI is clocked into the slave
Slave clocks out first bit of BYTE-SO
Master clocks in last bit of BYTE-SO
CS
A
1
B
MSB
C
2
3
4
BYTE-MOSI
5
6
7
D
8
E
LSB
F
1
G
MSB
Adesto AT45DB161E [DATASHEET]
2
H
3
4
BYTE-SO
5
8782D–DFLASH–11/2012
6
7
8
I
LSB
1
50