AT91SAM7X128 Atmel, AT91SAM7X128 Datasheet - Page 57

• Manufacturer Part Number: AT91SAM7X128
• Description: MCU 32-Bit 91S ARM7TDMI RISC 128KB Flash 1.8V/3.3V 100-Pin LQFP
• Manufacturer: Atmel

Specifications of AT91SAM7X128

• Package: 100LQFP
• Device Core: ARM7TDMI
• Family Name: 91S
• Maximum Speed: 55 MHz
• Ram Size: 32 KB
• Program Memory Size: 128 KB
• Operating Supply Voltage: 1.8|3.3 V
• Data Bus Width: 32 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 62
• Interface Type: CAN/Ethernet/SPI/I2S/TWI/USART/USB
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 3

13. Reset Controller (RSTC)
13.1
6120H–ATARM–17-Feb-09
Block Diagram
The Reset Controller (RSTC), based on power-on reset cells, handles all the resets of the sys-
tem 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 processor resets.
A brownout detection is also available to prevent the processor from falling into an unpredictable
state.
Figure 13-1. Reset Controller Block Diagram
Main Supply
WDRPROC
bod_rst_en
brown_out
POR
wd_fault
NRST
AT91SAM7X512/256/128 Preliminary
nrst_out
Brownout
Counter
Manager
Startup
Manager
Reset Controller
NRST
user_reset
exter_nreset
bod_reset
SLCK
Manager
Reset
State
rstc_irq
proc_nreset
periph_nreset
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