AT91SAM7S256C-MU Atmel, AT91SAM7S256C-MU Datasheet - Page 292

• Manufacturer Part Number: AT91SAM7S256C-MU
• Description: IC ARM7 MCU 32BIT 256K 64-QFN
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7S256C-MU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 55MHz
• Connectivity: I²C, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 64K 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: 64-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
• Processor Series: AT91
• Core: ARM7TDMI
• Data Bus Width: 32 bit
• Data Ram Size: 64 KB
• Interface Type: SPI, TWI, USART, USB
• Maximum Clock Frequency: 55 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 5
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• For Use With: AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9AT91SAM7S-EK - KIT EVAL FOR ARM AT91SAM7S
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: AT91SAM7S256-MU; AT91SAM7S256-MU

29.3
29.4
29.4.1
29.5
29.5.1
292
Block Diagram
Application Block Diagram
Product Dependencies
AT91SAM7S Series Preliminary
I/O Lines Description
I/O Lines
Figure 29-1. Block Diagram
Figure 29-2. Application Block Diagram
Table 29-3.
Both TWD and TWCK are bidirectional lines, connected to a positive supply voltage via a current
source or pull-up resistor (see
Pin Name
TWD
TWCK
Rp: Pull up value as given by the I²C Standard
Host with
Interface
TWI
TWD
TWCK
I/O Lines Description
PMC
APB Bridge
Serial EEPROM
Atmel TWI
Slave 1
MCK
Pin Description
Two-wire Serial Data
Two-wire Serial Clock
Figure 29-2 on page
I²C RTC
Two-wire
Interface
Slave 2
Controller
I²C LCD
Slave 3
292). When the bus is free, both lines are
Interrupt
TWI
PIO
AIC
I²C Temp.
Slave 4
Sensor
Rp
6175K–ATARM–30-Aug-10
Input/Output
Input/Output
TWCK
TWD
Type
Rp
VDD