AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 57

• Manufacturer Part Number: AT91SAM7S256D-AU
• Description: ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
• Manufacturer: Atmel
• Series: SAM7S256r

Specifications of AT91SAM7S256D-AU

• Rohs: yes
• Core: ARM
• Processor Series: AT91SAM
• Data Bus Width: 16 bit/32 bit
• Maximum Clock Frequency: 55 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 64 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: LQFP-64
• Mounting Style: SMD/SMT
• Interface Type: 2-Wire, I2S, SPI, USART
• Length: 7 mm

13. Reset Controller (RSTC)
13.1
13.2
Overview
The Reset Controller (RSTC), based on power-on reset cells, handles all the resets of the system without any
external components. It reports which reset occurred last.
The Reset Controller also drives independently or simultaneously the external reset and the peripheral and proces-
sor resets.
A brownout detection is also available to prevent the processor from falling into an unpredictable state.
Block Diagram
Figure 13-1. Reset Controller Block Diagram
Main Supply
WDRPROC
bod_rst_en
brown_out
POR
wd_fault
NRST
nrst_out
Brownout
Manager
Counter
Startup
Manager
Reset Controller
NRST
user_reset
exter_nreset
bod_reset
SLCK
Manager
Reset
State
SAM7S Series [DATASHEET]
rstc_irq
proc_nreset
periph_nreset
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