Datasheet

Electrical Characteristics
S12XS Family Reference Manual, Rev. 1.13
686 Freescale Semiconductor
A.5 Output Loads
A.5.1 Resistive Loads
The voltage regulator is intended to supply the internal logic and oscillator. It allows no external DC loads.
A.5.2 Capacitive Loads
The capacitive loads are specified in Table A-21. Ceramic capacitors with X7R dielectricum are required.
A.5.3 Chip Power-up and Voltage Drops
LVI (low voltage interrupt), POR (power-on reset) and LVRs (low voltage reset) handle chip power-up or
drops of the supply voltage. Their function is shown in Figure A-2 .
Figure A-2. S12XS family - Chip Power-up and Voltage Drops (not scaled)
Table A-21. S12XS family - Capacitive Loads
Num Characteristic Symbol Min Recommended Max Unit
1
VDD/VDDF external capacitive load
C
DDext
176 220 264 nF
3
VDDPLL external capacitive load
C
DDPLLext
80 220 264 nF
V
LVID
V
LVIA
V
LVRXD
V
LVRXA
V
PORD
LVI
POR
LVRX
t
V
V
DDX
LVI enabled
LVI disabled due to LVR
V
DD