S3S12HZ256J3CAA FREESCALE [Freescale Semiconductor, Inc], S3S12HZ256J3CAA Datasheet - Page 502

• Manufacturer Part Number: S3S12HZ256J3CAA
• Description: HCS12 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Chapter 17 Dual Output Voltage Regulator (VREG3V3V2)
17.1.3
Figure 17-1
REG consists of two parallel sub-blocks, REG1 and REG2, providing two independent output voltages.
502
V
V
V
DDR
DDA
SSA
Block Diagram
shows the function principle of VREG3V3 by means of a block diagram. The regulator core
V
REGEN
LVD
Figure 17-1. VREG3V3 Block Diagram
CTRL
MC9S12HZ256 Data Sheet, Rev. 2.04
REG2
REG1
LVR
REG: Regulator Core
LVD: Low Voltage Detect
CTRL: Regulator Control
LVR: Low Voltage Reset
POR: Power-on Reset
PIN
LVI
LVR
POR
Freescale Semiconductor
POR
V
V
V
V
DDPLL
SSPLL
DD
SS