LFDAS12XSDT Freescale Semiconductor, LFDAS12XSDT Datasheet - Page 490

• Manufacturer Part Number: LFDAS12XSDT
• Description: HARDWARE MC9S12XS 52-PIN
• Manufacturer: Freescale Semiconductor

Specifications of LFDAS12XSDT

• Module/board Type: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: -

Voltage Regulator (S12VREGL3V3V1)
17.1.3
Figure 17-1
REG consists of three parallel subblocks, REG1, REG2 and REG3, providing three independent output
voltages.
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3. Shutdown mode
Controlled by VREGEN (see device level specification for connectivity of VREGEN).
This mode is characterized by minimum power consumption. The regulator outputs are in a high-
impedance state, only the POR feature is available, LVD, LVR and HTD are disabled. The API
internal RC oscillator clock is not available.
This mode must be used to disable the chip internal regulator VREG_3V3, i.e., to bypass the
VREG_3V3 to use external supplies.
Block Diagram
shows the function principle of VREG_3V3 by means of a block diagram. The regulator core
S12XS Family Reference Manual, Rev. 1.11
Freescale Semiconductor