AT91FR40162S-CJ Atmel, AT91FR40162S-CJ Datasheet - Page 16

• Manufacturer Part Number: AT91FR40162S-CJ
• Description: IC ARM MCU FLASH 1K 121BGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91FR40162S-CJ

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 75MHz
• Connectivity: EBI/EMI, UART/USART
• Peripherals: WDT
• Number Of I /o: 32
• Program Memory Size: 2MB (1M x 16)
• Program Memory Type: FLASH
• Ram Size: 256K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 121-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

7.1
7.1.1
7.1.2
7.1.3
7.1.4
7.1.5
16
System Peripherals
AT91FR40162S Preliminary
PS: Power-saving
AIC: Advanced Interrupt Controller
PIO: Parallel I/O Controller
WD: Watchdog
SF: Special Function
The power-saving feature optimizes power consumption, enabling the software to stop the
ARM7TDMI clock (idle mode), restarting it when the module receives an interrupt (or reset). It
also enables on-chip peripheral clocks to be enabled and disabled individually, matching power
consumption and application needs.
The Advanced Interrupt Controller has an 8-level priority, individually maskable, vectored inter-
rupt controller, and drives the NIRQ and NFIQ pins of the ARM7TDMI from:
The AIC is extensively programmable offering maximum flexibility, and its vectoring features
reduce the real-time overhead in handling interrupts.
The AIC also features a spurious vector detection feature, which reduces spurious interrupt han-
dling to a minimum, and a protect mode that facilitates the debug capabilities.
The AT91FR40162S has 32 programmable I/O lines. Six pins are dedicated as general-purpose
I/O pins. Other I/O lines are multiplexed with an external signal of a peripheral to optimize the
use of available package pins. The PIO controller enables generation of an interrupt on input
change and insertion of a simple input glitch filter on any of the PIO pins.
The Watchdog is built around a 16-bit counter and is used to prevent system lock-up if the soft-
ware becomes trapped in a deadlock. It can generate an internal reset or interrupt, or assert an
active level on the dedicated pin NWDOVF. All programming registers are password-protected
to prevent unintentional programming.
The AT91FR40162S provides registers that implement the following special functions.
• The external fast interrupt line (FIQ)
• The three external interrupt request lines (IRQ0 - IRQ2)
• The interrupt signals from the on-chip peripherals
• Chip Identification
• RESET Status
• Protect Mode
6174B–ATARM–07-Nov-05