SAM3S1B Atmel Corporation, SAM3S1B Datasheet - Page 617

• Manufacturer Part Number: SAM3S1B
• Manufacturer: Atmel Corporation

Specifications of SAM3S1B

• Flash (kbytes): 64 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 64 MHz
• Cpu: Cortex-M3
• # Of Touch Channels: 23
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 34
• Ext Interrupts: 34
• Usb Transceiver: 1
• Quadrature Decoder Channels: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 3
• Twi (i2c): 2
• Uart: 4
• Ssc: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 10
• Adc Resolution (bits): 12
• Adc Speed (ksps): 1000
• Analog Comparators: 1
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 16
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 1.62 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

31.5
Figure 31-2. Application Block Diagram
31.5.1
Table 31-3.
31.6
31.6.1
6500C–ATARM–8-Feb-11
Pin Name
TWD
TWCK
Application Block Diagram
Product Dependencies
I/O Lines Description
I/O Lines
I/O Lines Description
Rp: Pull up value as given by the I²C Standard
Host with
Interface
TWI
Both TWD and TWCK are bidirectional lines, connected to a positive supply voltage via a current
source or pull-up resistor (see
high. The output stages of devices connected to the bus must have an open-drain or open-col-
lector to perform the wired-AND function.
TWD and TWCK pins may be multiplexed with PIO lines. To enable the TWI, the programmer
must perform the following step:
The user must not program TWD and TWCK as open-drain. It is already done by the hardware.
Table 31-4.
TWD
TWCK
• Program the PIO controller to dedicate TWD and TWCK as peripheral lines.
Serial EEPROM
Instance
Pin Description
Two-wire Serial Data
Two-wire Serial Clock
TWI0
TWI0
TWI1
TWI1
Atmel TWI
Slave 1
I/O Lines
I²C RTC
Slave 2
Figure 31-2 on page
TWCK0
TWCK1
Signal
TWD0
TWD1
Controller
I²C LCD
Slave 3
I²C Temp.
617). When the bus is free, both lines are
Slave 4
Sensor
I/O Line
Rp
PB5
PB4
PA4
PA3
Rp
Peripheral
VDD
Input/Output
Input/Output
Type
A
A
A
A
SAM3S
617