
ML610471/472/473/Q471/Q472/Q473 User's Manual
Chapter 3 Reset Function
3-1
3. Reset Function
3.1 Overview
This LSI has the five reset functions shown below. If any of the five reset conditions is satisfied, this LSI enters system
reset mode.
•
Reset by the RESET_N pin
•
Reset by power-on detection
•
Reset by the 2
nd
watchdog timer (WDT) overflow
•
Software reset by execution of the BRK instruction
3.1.1 Features
•
The RESET_N pin has an internal pull-up resistor
•
250 ms, 1 sec, 4 sec, or 16 sec can be selected as the watchdog timer (WDT) overflow period
•
Built-in reset status register (RSTAT) indicating the reset generation causes
•
Only the CPU is reset by the BRK instruction (neither the RAM area nor the SFR area are reset).
3.1.2 Configuration
Figure 3-1 shows the configuration of the reset generation circuit.
R
STAT
: Reset status register
Figure 3-1 Configuration of Reset Generation Circuit
3.1.3 List of Pins
Pin name
Input/output
Function
RESET_N
I
Reset input pin
Power on reset
RESET_N
RESET
V
DD
WDT reset
RSTAT
Data bus
Содержание ML610471
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...