sc9s12hy64j0vllr Freescale Semiconductor, Inc, sc9s12hy64j0vllr Datasheet - Page 232

• Manufacturer Part Number: sc9s12hy64j0vllr
• Description: S12 Microcontrollers Mcu 16-bit Hcs12 Cisc 32kb Flash 5v Tray
• Manufacturer: Freescale Semiconductor, Inc

S12 Clock, Reset and Power Management Unit (S12CPMU) Block Description
the EXTAL pin is pulled down by an internal resistor of approximately 200 k and the XTAL pin is pulled
down by an internal resistor of approximately 700 k .
7.2.3
Depending on the VSEL value either the voltage level generated by the temperature sensor or the VREG
bandgap voltage is driven to a special channel of the ATD Converter. See device level specification for
connectivity.
7.2.4
VDDR is the power input of IVREG. All currents sourced into the regulator loads flow through this pin.
A chip external decoupling capacitor (100 nF...220 nF, X7R ceramic) between VDDR and VSS can
smooth ripple on VDDR.
7.2.5
VDDA/VSSA
precision reference circuits are supplied from these signals. A chip external decoupling capacitor (100
nF...220 nF, X7R ceramic) between VDDA and VSSA can further improve the quality of this supply.
7.2.6
VSS and VSSPLL must be grounded.
7.2.7
This supply domain is monitored by the Low Voltage Reset circuit.
An off-chip decoupling capacitor (100 nF...220 nF, X7R ceramic) between VDDX and VSSX can further
improve the quality of this supply.
7.2.8
This pin provides the signal selected via APIES and is enabled with APIEA bit. See device specification
to which pin it connects.
232
TEMPSENSE — temperature sensor output voltage
VDDR — Regulator Power Input Pin
VDDA, VSSA — Regulator Reference Supply Pins
VSS, VSSPLL— Ground Pins
VDDX, VSSX— Pad Supply Pins
API_EXTCLK — API external clock output pin
,
Freescale recommends an evaluation of the application board and chosen
resonator or crystal by the resonator or crystal supplier.
Loop controlled circuit is not suited for overtone resonators and crystals.
which are relatively quiet, are used to supply the analog parts of the regulator. Internal
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
NOTE
Freescale Semiconductor