AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 270
AT91SAM7S256D-AU
Manufacturer Part Number
AT91SAM7S256D-AU
Description
ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
Manufacturer
Atmel
Series
SAM7S256r
Datasheet
1.AT91SAM7S256D-AU.pdf
(775 pages)
Specifications of AT91SAM7S256D-AU
Rohs
yes
Core
ARM
Processor Series
AT91SAM
Data Bus Width
16 bit/32 bit
Maximum Clock Frequency
55 MHz
Program Memory Size
256 KB
Data Ram Size
64 KB
On-chip Adc
Yes
Operating Supply Voltage
3 V to 3.6 V
Operating Temperature Range
- 40 C to + 85 C
Package / Case
LQFP-64
Mounting Style
SMD/SMT
Interface Type
2-Wire, I2S, SPI, USART
Length
7 mm
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT91SAM7S256D-AU
Manufacturer:
ATMEL
Quantity:
101
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28.3
28.4
Table 28-1.
28.5
28.5.1
28.5.2
28.5.3
Pin Name
MISO
MOSI
SPCK
NPCS1-NPCS3
NPCS0/NSS
Application Block Diagram
Figure 28-2. Application Block Diagram: Single Master/Multiple Slave Implementation
Signal Description
Product Dependencies
The pins used for interfacing the compliant external devices may be multiplexed with PIO lines. The programmer
must first program the PIO controllers to assign the SPI pins to their peripheral functions.
The SPI may be clocked through the Power Management Controller (PMC), thus the programmer must first config-
ure the PMC to enable the SPI clock.
The SPI interface has an interrupt line connected to the Advanced Interrupt Controller (AIC). Handling the SPI
interrupt requires programming the AIC before configuring the SPI.
I/O Lines
Power Management
Interrupt
Signal Description
SPI Master
Pin Description
Master In Slave Out
Master Out Slave In
Serial Clock
Peripheral Chip Selects
Peripheral Chip Select/Slave Select
SPCK
MISO
MOSI
NPCS0
NPCS1
NPCS2
NPCS3
NC
SAM7S Series [DATASHEET]
Master
Input
Output
Output
Output
Output
SPCK
MISO
MOSI
NSS
SPCK
MISO
MOSI
NSS
SPCK
MISO
MOSI
NSS
6175M–ATARM–26-Oct-12
Slave 0
Slave 1
Slave 2
Type
Slave
Output
Input
Input
Unused
Input
270
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