Техническая Спецификация для Atmel Evaluation Kit for AT32uC3A0512, 32-Bit AVR Microcontroller Atmel ATEVK1105 ATEVK1105
Модели
ATEVK1105
66
AT32UC3A
13.5.11.3
External Reset
The external reset detector monitors the state of the RESET_N pin. By default, a low level on
this pin will generate a reset.
13.5.12
Calibration registers
The Power Manager controls the calibration of the RC oscillator, voltage regulator, bandgap
voltage reference through several calibrations registers.
Those calibration registers are loaded after a Power On Reset with default values stored in fac-
Those calibration registers are loaded after a Power On Reset with default values stored in fac-
tory-programmed flash fuses.
Although it is not recommended to override default factory settings, it is still possible to override
Although it is not recommended to override default factory settings, it is still possible to override
these default values by writing to those registers. To prevent unexpected writes due to software
bugs, write access to these registers is protected by a “key”. First, a write to the register must be
made with the field “KEY” equal to 0x55 then a second write must be issued with the “KEY” field
equal to 0xAA
13.6
User Interface
Offset
Register
Name
Access
Reset State
0x0000
Main Clock Control
MCCTRL
Read/Write
0x00000000
0x0004
Clock Select
CKSEL
Read/Write
0x00000000
0x0008
CPU Mask
CPUMASK
Read/Write
0x00000003
0x000C
HSB Mask
HSBMASK
Read/Write
0x0000007F
0x0010
PBA Mask
PBAMASK
Read/Write
0x0000FFFF
0x0014
PBB Mask
PBBMASK
Read/Write
0x0000003F
0x0018 - 0x001C
Reserved
0x0020
PLL0 Control
PLL0
Read/Write
0x00000000
0x0024
PLL1 Control
PLL1
Read/Write
0x00000000
0x0028
Oscillator 0 Control Register
OSCCTRL0
Read/Write
0x00000000
0x002C
Oscillator 1 Control Register
OSCCTRL1
Read/Write
0x00000000
0x0030
Oscillator 32 Control Register
OSCCTRL32
Read/Write
0x00000000
0x0034
Reserved
0x0038
Reserved
0x003C
Reserved
0x0040
PM Interrupt Enable Register
IER
Write Only
0x00000000
0x0044
PM Interrupt Disable Register
IDR
Write Only
0x00000000
0x0048
PM Interrupt Mask Register
IMR
Read Only
0x00000000
0x004C
PM Interrupt Status Register
ISR
Read Only
0x00000000
0x0050
PM Interrupt Clear Register
ICR
Write Only
0x00000000
0x0054
Power and Oscillators Status Register
POSCSR
Read/Write
0x00000000
0x0058 - 0x005C
Reserved
32058K
AVR32-01/12