mc68hc05pv8a Freescale Semiconductor, Inc, mc68hc05pv8a Datasheet - Page 155

• Manufacturer Part Number: mc68hc05pv8a
• Description: Mc68hc05pv8a Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

12.1 Contents
12.2 Introduction
12.3 Internal Power Supply
12.4 5V Regulator
MC68HC(8)05PV8/A — Rev. 1.9
Technical Data — MC68HC(8)05PV8/A
12.2
12.3
12.4
12.5
The MC68HC(8)05PV8/A contains a low-power, low-drop CMOS
on-chip fixed voltage regulator to provide internal power to the MCU from
an external DC source. The MC68HC05PV8A contains on top of that a
selectable standby regulator to achieve lower standby current.
The on-chip voltage regulation and power supply control circuitry is
comprised of two elements: the regulator and the low voltage reset
(LVR) circuitry on the MC68HC(8)05PV8. In addition to that, the voltage
regulator on MC68HC05PV8A comprises a standby regulator and a
standby low voltage reset block.
The 5V regulator accepts an unregulated input supply and provides a
regulated 5V supply to all the digital sections of the device. The output
of this regulator is also connected to the VDD pin to allow for decoupling
and to provide an external power source.
The voltage regulator handles the generation of low voltage resets.
For details refer to
Freescale Semiconductor, Inc.
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Internal Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
5V Regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Trimming the Voltage Regulator . . . . . . . . . . . . . . . . . . . . . . . 156
Go to: www.freescale.com
Voltage Regulator
5.12 Low Voltage
Section 12. Voltage Regulator
Reset.
Technical Data