
16-1
ML63326 User's Manual
Chapter 16 Battery Low Detect Circuit (BLD)
16
Chapter 16 Battery Low Detect Circuit (BLD)
16.1 Overview
The ML63326 contains a battery low detect circuit (BLD).
The battery low detect circuit detects when the battery voltage (supply voltage V
DD
) falls
below the judgment voltage value. Three levels of judgment voltage can be selected by the
BLDCON bits.
Judgment voltage values (Ta = 25
°
C): 2.00
±
0.10 V, 2.20
±
0.10 V, 2.40
±
0.10 V
!
Note:
•
When verifying BLD operation, the operation must be verified with an evaluation sample
device.
The development support tool (EASE63180) does not support BLD.
16.2 Battery Low Detect Circuit Configuration
The battery low detect circuit consists of a judgment circuit and a judgment voltage select
circuit. Figure 16-1 shows the circuit configuration.
Figure 16-1 Battery Low Detect Circuit
V
DD
Judgment circuit
Judgment voltage
select circuit
ENBL
BLDF
Read BLDCON
4
Data bus
BLDCON
3
Q
I/O
Summary of Contents for ML63326
Page 3: ......
Page 13: ......
Page 14: ...Chapter 1 Overview 1 ...
Page 15: ......
Page 37: ...1 22 ML63326 User s Manual Chapter 1 Overview ...
Page 38: ...Chapter 2 CPU and Memory Spaces 2 ...
Page 39: ......
Page 50: ...CPU Control Functions Chapter 3 3 ...
Page 51: ......
Page 57: ...3 6 ML63326 User s Manual Chapter 3 CPU Control Functions ...
Page 58: ...Interrupt INT326 Chapter 4 4 ...
Page 59: ......
Page 71: ...4 12 ML63326 User s Manual Chapter 4 Interrupt INT326 ...
Page 72: ...Clock Generator Circuit OSC Chapter 5 5 ...
Page 73: ......
Page 83: ...5 10 ML63326 User s Manual Chapter 5 Clock Generator Circuit OSC ...
Page 84: ...Time Base Counter TBC Chapter 6 6 ...
Page 85: ......
Page 90: ...Timers TIMER Chapter 7 7 ...
Page 91: ......
Page 115: ...7 24 ML63326 User s Manual Chapter 7 Timers TIMER ...
Page 116: ...Chapter 8 8 100 Hz Timer Counter 100HzTC ...
Page 117: ......
Page 121: ...8 4 ML63326 User s Manual Chapter 8 100 Hz Timer Counter 100HzTC ...
Page 122: ...Chapter 9 9 Watchdog Timer WDT ...
Page 123: ......
Page 128: ...Chapter 10 10 Ports INPUT OUTPUT I O PORT ...
Page 129: ......
Page 170: ...Chapter 11 11 External Memory Transfer Function EXTMEM ...
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Page 179: ...11 8 ML63326 User s Manual Chapter 11 External Memory Transfer Function EXTMEM ...
Page 180: ...Chapter 12 12 Melody Driver MELODY63K ...
Page 181: ......
Page 195: ...12 14 ML63326 User s Manual Chapter 12 Melody Driver MELODY63K ...
Page 196: ...13 Chapter 13 Voice Synthesis ...
Page 197: ......
Page 228: ...14 Chapter 14 Shift Register SFT ...
Page 229: ......
Page 236: ...15 Chapter 15 LCD Driver LCD ...
Page 237: ......
Page 250: ...16 Chapter 16 Battery Low Detect Circuit BLD ...
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Page 255: ...16 4 ML63326 User s Manual Chapter 16 Battery Low Detect Circuit BLD ...
Page 256: ...Chapter 17 17 Power Supply Circuit POWER ...
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Page 260: ...Appendixes ...
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Page 321: ...Appendix 60 ML63326 User s Manual Appendix G ...