AT91SAM7X128 Atmel, AT91SAM7X128 Datasheet - Page 629

• Manufacturer Part Number: AT91SAM7X128
• Description: MCU 32-Bit 91S ARM7TDMI RISC 128KB Flash 1.8V/3.3V 100-Pin LQFP
• Manufacturer: Atmel

Specifications of AT91SAM7X128

• Package: 100LQFP
• Device Core: ARM7TDMI
• Family Name: 91S
• Maximum Speed: 55 MHz
• Ram Size: 32 KB
• Program Memory Size: 128 KB
• Operating Supply Voltage: 1.8|3.3 V
• Data Bus Width: 32 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 62
• Interface Type: CAN/Ethernet/SPI/I2S/TWI/USART/USB
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 3

Table 38-21. SPI Timings
Notes:
6120H–ATARM–17-Feb-09
Symbol
SPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
0
1
2
3
4
5
6
7
8
9
10
11
1. 3.3V domain: V
2. t
CPMCK
Parameter
MISO Setup time before SPCK rises (master)
MISO Hold time after SPCK rises (master)
SPCK rising to MOSI Delay (master)
MISO Setup time before SPCK falls (master)
MISO Hold time after SPCK falls (master)
SPCK falling to MOSI Delay (master)
SPCK falling to MISO Delay (slave)
MOSI Setup time before SPCK rises (slave)
MOSI Hold time after SPCK rises (slave)
SPCK rising to MISO Delay (slave)
MOSI Setup time before SPCK falls (slave)
MOSI Hold time after SPCK falls (slave)
: Master Clock period in ns.
VDDIO
Figure 38-7. SPI Slave mode with (CPOL = NCPHA = 0) or (CPOL= NCPHA= 1)
Note that in SPI master mode the ATSAM7X512/256/128 does not sample the data (MISO) on
the opposite edge where data clocks out (MOSI) but the same edge is used as shown in
38-4
SPCK
MISO
MOSI
from 3.0V to 3.6V, maximum external capacitor = 40 pF.
and
Figure
38-5.
AT91SAM7X512/256/128 Preliminary
SPI
9
3.3V domain
3.3V domain
3.3V domain
3.3V domain
3.3V domain
3.3V domain
3.3V domain
3.3V domain
3.3V domain
3.3V domain
3.3V domain
3.3V domain
Conditions
SPI
10
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
SPI
28.5 + (t
26.5 + (t
11
Min
CPMCK
CPMCK
0
0
2
3
3
3
)/2
)/2
(2)
(2)
Max
28
28
2
2
Units
Figure
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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