AT25010A Просмотр технического описания (PDF) - Atmel Corporation
Номер в каталоге
Компоненты Описание
Список матч
AT25010A Datasheet PDF : 18 Pages
| |||
Table 3-3. AC Characteristics
Applicable over recommended operating range from TA = −40⋅C to +125⋅C, VCC = As Specified,
CL = 1 TTL Gate and 100 pF (unless otherwise noted).
Symbol
Parameter
Voltage
Min
Max
fSCK
SCK Clock Frequency
2.7–5.5
0
5.0
tRI
Input Rise Time
2.7–5.5
2
tFI
Input Fall Time
2.7–5.5
2
tWH
SCK High Time
2.7–5.5
40
tWL
SCK Low Time
2.7–5.5
40
tCS
CS High Time
2.7–5.5
80
tCSS
CS Setup Time
2.7–5.5
80
tCSH
CS Hold Time
2.7–5.5
80
tSU
Data In Setup Time
2.7–5.5
5
tH
Data In Hold Time
2.7–5.5
20
tHD
Hold Setup Time
2.7–5.5
40
tCD
Hold Hold Time
2.7–5.5
40
tV
Output Valid
2.7–5.5
0
40
tHO
Output Hold Time
2.7–5.5
0
tLZ
Hold to Output Low Z
2.7–5.5
0
40
tHZ
Hold to Output High Z
2.7–5.5
80
tDIS
Output Disable Time
2.7–5.5
80
tWC
Endurance(1)
Write Cycle Time
5.0V, 25°C, Page Mode
2.7–5.5
5
1M
Note: 1. This parameter is characterized and is not 100% tested.
Units
MHz
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
Write Cycles
4. Serial Interface Description
MASTER: The device that generates the serial clock.
SLAVE: Because the serial clock pin (SCK) is always an input, the AT25010A/020A/040A always
operates as a slave.
TRANSMITTER/RECEIVER: The AT25010A/020A/040A has separate pins designated for data
transmission (SO) and reception (SI).
MSB: The Most Significant Bit (MSB) is the first bit transmitted and received.
SERIAL OP-CODE: After the device is selected with CS going low, the first byte will be
received. This byte contains the op-code that defines the operations to be performed. The op-
code also contains address bit A8 in both the Read and Write instructions.
INVALID OP-CODE: If an invalid op-code is received, no data will be shifted into the
AT25010A/020A/040A, and the serial output pin (SO) will remain in a high impedance state until
the falling edge of CS is detected again. This will reinitialize the serial communication.
4 AT25010A/020A/040A/080A
5087E–SEEPR–7/09
Share Link: 