AT45DB011B-SU Atmel, AT45DB011B-SU Datasheet - Page 14

• Manufacturer Part Number: AT45DB011B-SU
• Description: IC FLASH 1MBIT 20MHZ 8SOIC
• Manufacturer: Atmel

Specifications of AT45DB011B-SU

• Format - Memory: FLASH
• Memory Type: DataFLASH
• Memory Size: 1M (512 pages x 264 bytes)
• Speed: 20MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Input Test Waveforms and Measurement Levels
Output Test Load
AC Waveforms
Waveform 1 – Inactive Clock Polarity Low and SPI Mode 0
Waveform 2 – Inactive Clock Polarity High and SPI Mode 3
14
AT45DB011B
SCK
SCK
CS
SO
CS
SO
SI
SI
HIGH IMPEDANCE
HIGH Z
Two different timing diagrams are shown below. Waveform 1 shows the SCK signal being low
when CS makes a high-to-low transition, and Waveform 2 shows the SCK signal being high
when CS makes a high-to-low transition. Both waveforms show valid timing diagrams. The
setup and hold times for the SI signal are referenced to the low-to-high transition on the SCK
signal.
Waveform 1 shows timing that is also compatible with SPI Mode 0, and Waveform 2 shows
timing that is compatible with SPI Mode 3.
t
CSS
t
t
SU
t
V
CSS
t
t
SU
R
, t
F
VALID IN
t
< 3 ns (10% to 90%)
WL
DRIVING
LEVELS
VALID IN
AC
VALID OUT
t
WH
t
0.45V
WH
2.4V
t
t
V
HO
t
H
DEVICE
UNDER
TEST
t
H
t
WL
VALID OUT
2.0
0.8
30 pF
t
HO
AC
MEASUREMENT
LEVEL
t
CSH
t
CSH
t
HIGH IMPEDANCE
t
HIGH IMPEDANCE
t
t
DIS
DIS
CS
CS
1984J–DFLASH–06/06