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ML610471/472/473/Q471/Q472/Q473 User's Manual
Chapter 19 Power Supply Circuit
19-1
19. Power Supply Circuit
19.1 Overview
This LSI includes a voltage regulator circuit for internal logic (VRL).
The VRL outputs the operating voltage, V
DDL
, of the internal logic circuit, program memory, RAM, low-speed
oscillation, etc.
For the circuit configuration of the power supplies for LCD (V
L1
to V
L3
), see Chapter 18, “LCD Driver”.
19.1.1 Features
•
The VRL outputs the operating voltage, V
DDL
, of the internal logic circuit, program memory, RAM, low-speed
oscillation, etc.
19.1.2 Configuration
Figure 19-1 shows the configuration of the power supply circuit.
Figure 19-1 Configuration of Power Supply Circuit
19.1.3 List of Pins
Pin name
I/O
Function
V
DDL
—
Positive power supply pin for the internal logic circuits
The V
DDL
voltage becomes approximately 1.2 V at a system reset. At
a system reset, the oscillation frequency of the high-speed oscillation
circuit (CR oscillator circuit) is set to 500kHz.
V
DD
V
SS
V
DD
= 1.25 to 3.6V (when HSCLK set to 500kHz)
V
DDL
Voltage regulator
circuit for logic
VRL
Low-speed
oscillation
circuit
Logic
circuit
High-speed
oscillation circuit
(CR oscillator
circuit)
Port
GPIO
XT0
XT1
General-purpose
port
Cl
Содержание ML610472
Страница 12: ...Chapter 1 Overview...
Страница 38: ...Chapter 2 CPU and Memory Space...
Страница 44: ...Chapter 3 Reset Function...
Страница 48: ...Chapter 4 MCU Control Function...
Страница 62: ...Chapter 5 Interrupts...
Страница 82: ...Chapter 6 Clock Generation Circuit...
Страница 94: ...Chapter 7 Time Base Counter...
Страница 105: ...Chapter 8 Capture...
Страница 114: ...Chapter 9 Timer...
Страница 133: ...Chapter 10 Watchdog Timer...
Страница 141: ...Chapter 11 UART...
Страница 164: ...Chapter 12 Port 0...
Страница 173: ...Chapter 13 Port 2...
Страница 180: ...Chapter 14 Port 3...
Страница 188: ...Chapter 15 Port 4...
Страница 199: ...Chapter 16 Port 6...
Страница 205: ...Chapter 17 RC Oscillation Type A D Converter...
Страница 225: ...Chapter 18 LCD Drivers...
Страница 243: ...Chapter 19 Power Supply Circuit...
Страница 245: ...Chapter 20 uEASE Flash Writer System...
Страница 249: ...Chapter 21 Software Development...
Страница 258: ...Appendixes...
Страница 280: ...Revision History...