AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 242

• Manufacturer Part Number: AT91SAM7S256D-AU
• Description: ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
• Manufacturer: Atmel
• Series: SAM7S256r

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

27.4
Figure 27-3. I/O Line Control Logic
Output Enable
Output Enable
Peripheral A
Peripheral B
Functional Description
Peripheral A
Peripheral B
PIO_BSR[0]
PIO_ASR[0]
Output
Output
PIO_ABSR[0]
PIO_OER[0]
PIO_ODR[0]
The PIO Controller features up to 32 fully-programmable I/O lines. Most of the control logic asso-
ciated to each I/O is represented in
represents but one of up to 32 possible indexes.
1
1
0
0
PIO_OSR[0]
PIO_IFER[0]
PIO_IFDR[0]
PIO_SODR[0]
PIO_CODR[0]
PIO_IFSR[0]
PIO_PDR[0]
PIO_PER[0]
Glitch
Filter
PIO_ODSR[0]
PIO_PSR[0]
PIO_PDSR[0]
1
0
PIO_IDR[31]
PIO_IER[31]
PIO_IER[0]
PIO_IDR[0]
1
0
1
0
Detector
Edge
PIO_IMR[31]
PIO_ISR[31]
PIO_IMR[0]
PIO_ISR[0]
PIO_MDDR[0]
Figure
PIO_MDER[0]
PIO_MDSR[0]
27-3. In this description each signal shown
(Up to 32 possible inputs)
SAM7S Series [DATASHEET]
1
0
0
1
PIO_PUER[0]
PIO_PUDR[0]
PIO_PUSR[0]
PIO Interrupt
6175M–ATARM–26-Oct-12
Peripheral B
Peripheral A
Input
Input
Pad
242