AT91SAM7SE32-AU Atmel, AT91SAM7SE32-AU Datasheet - Page 378

• Manufacturer Part Number: AT91SAM7SE32-AU
• Description: MCU ARM 32K HS FLASH 128-LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7SE32-AU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 55MHz
• Connectivity: EBI/EMI, I²C, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 88
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 128-LQFP
• Controller Family/series: AT91SAM7xxxx
• No. Of I/o's: 88
• Ram Memory Size: 8KB
• Cpu Speed: 48MHz
• No. Of Timers: 3
• Rohs Compliant: Yes
• Processor Series: AT91SAMx
• Core: ARM7TDMI
• Data Bus Width: 32 bit
• Data Ram Size: 8 KB
• Interface Type: EBI, SPI, TWI, USART
• Maximum Clock Frequency: 55 MHz
• Number Of Programmable I/os: 88
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JTRACE-ARM-2M, KSK-AT91SAM7S-PL, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: AT91SAM-ICE, AT91-ISP, AT91SAM7SE-EK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• For Use With: AT91SAM7SE-EK - EVAL BOARD FOR AT91SAM7SEAT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

33.3
33.4
Table 33-2.
33.5
33.5.1
33.5.2
33.5.3
378
Pin Name
TWD
TWCK
Application Block Diagram
I/O Lines Description
Product Dependencies
AT91SAM7SE512/256/32 Preliminary
I/O Lines
Power Management
Interrupt
I/O Lines Description
Figure 33-2. Application Block Diagram
Both TWD and TWCK are bidirectional lines, connected to a positive supply voltage via a current
source or pull-up resistor (see
stages of devices connected to the bus must have an open-drain or open-collector 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 steps:
The TWI interface may be clocked through the Power Management Controller (PMC), thus the
programmer must first configure the PMC to enable the TWI clock.
The TWI interface has an interrupt line connected to the Advanced Interrupt Controller (AIC). In
order to handle interrupts, the AIC must be programmed before configuring the TWI.
• Program the PIO controller to:
• Enable the peripheral clock.
Host with
Interface
– Dedicate TWD and TWCK as peripheral lines.
– Define TWD and TWCK as open-drain.
TWI
Pin Description
Two-wire Serial Data
Two-wire Serial Clock
TWD
TWCK
AT24LC16
Slave 1
U1
Figure
33-2). When the bus is free, both lines are high. The output
AT24LC16
Slave 2
U2
LCD Controller
Slave 3
U3
R
Input/Output
Input/Output
6222B–ATARM–26-Mar-07
Type
R
VDD