AT91SAM9G45-CU Atmel, AT91SAM9G45-CU Datasheet - Page 485

• Manufacturer Part Number: AT91SAM9G45-CU
• Description: MCU ARM9 324-TFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM9G45-CU

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 400MHz
• Connectivity: EBI/EMI, Ethernet, I²C, IrDA, MMC, SPI, SSC, UART/USART, USB
• Peripherals: AC'97, DMA, I²S, LCD, POR, PWM, WDT
• Number Of I /o: 160
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: ROM
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 0.9 V ~ 1.1 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 324-TFBGA
• Processor Series: AT91SAMx
• Core: ARM926EJ-S
• Data Bus Width: 32 bit
• Data Ram Size: 64 KB
• Interface Type: I2C, SPI, UART
• Maximum Clock Frequency: 800 MHz
• Number Of Programmable I/os: 160
• Number Of Timers: 5
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JTRACE-ARM-2M, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: AT91SAM-ICE, AT91-ISP
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit
• Controller Family/series: AT91
• No. Of I/o's: 160
• Ram Memory Size: 64KB
• Cpu Speed: 400MHz
• No. Of Timers: 2
• Rohs Compliant: Yes
• For Use With: AT91SAM9G45-EKES - KIT EVAL FOR AT91SAM9G45
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

31.5
Figure 31-2. Application Block Diagram
31.5.1
Table 31-3.
31.6
31.6.1
485
Pin Name
TWD
TWCK
Application Block Diagram
Product Dependencies
AT91SAM9G45
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
Atmel TWI
TWI0
TWI0
TWI1
TWI1
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.
485). When the bus is free, both lines are
Slave 4
Sensor
Rp
I/O Line
PB11
PB10
PA21
PA20
Rp
VDD
Input/Output
Input/Output
6438F–ATARM–21-Jun-10
Type
Peripheral
A
A
A
A