Datasheet

286
32142D–06/2013
ATUC64/128/256L3/4U
14.6.17 Voltage Regulator Calibration Register
Name:
VREGCR
Access Type: Read/Write
Reset Value: -
• SFV: Store Final Value
0: The register is read/write.
1: The register is read-only, to protect against further accidental writes.
This bit is cleared by a Power-on Reset.
• INTPD: Internal Pull-down
This bit is used for test purposes only.
0: The voltage regulator output is not pulled to ground.
1: The voltage regulator output has a pull-down to ground.
• POR18VALUE: Power-on Reset 1.8V Output Value
0: VDDCORE voltage is below the POR18 power-on threshold level.
1: VDDCORE voltage is above the POR18 power-on threshold level.
This bit is read-only. Writing to this bit has no effect.
• POR33VALUE: Power-on Reset 3.3V Output Value
0: Internal regulator supply voltage is below the POR33 power-on threshold level.
1: Internal regulator supply voltage is above the POR33 power-on threshold level.
This bit is read-only. Writing to this bit has no effect.
• POR18MASK: Power-on Reset 1.8V Output Mask
0: Power-on Reset is not masked.
1: Power-on Reset is masked.
• POR18STATUS: Power-on Reset 1.8V Status
0: Power-on Reset is disabled.
1: Power-on Reset is enabled.
This bit is read-only. Writing to this bit has no effect.
• POR18EN: Power-on Reset 1.8V Enable
Writing a zero to this bit disables the POR18 detector.
Writing a one to this bit enables the POR18 detector.
• POR33MASK: Power-on Reset 3.3V Output Mask
0: Power-on Reset 3.3V is not masked.
31 30 29 28 27 26 25 24
SFV INTPD - - - DBG-
POR18VALUE POR33VALUE
23 22 21 20 19 18 17 16
POR18MASK
POR18STAT
US
POR18EN POR33MASK
POR33STAT
US
POR33EN DEEPDIS FCD
15 14 13 12 11 10 9 8
---- CALIB
76543210
ON VREGOK EN - - SELVDD