
6-1
ML63326 User's Manual
Chapter 6 Time Base Counter (TBC)
6
Chapter 6 Time Base Counter (TBC)
6.1 Overview
The time base counter (TBC) is a 15-bit internal counter, which generates the clock supplied
to internal peripheral functions.
The TBC clock is a time base clock (TBCCLK).
TBC outputs are used for functions such as time base interrupts and various other circuits.
TBC8–11 and TBC12–15 can be read/reset by software.
The TBC generates an interrupt request at the falling edge of 32 Hz/16 Hz/4 Hz/2 Hz output.
The TBC is initialized to 0000H at system reset.
6.2 Time Base Counter Configuration
The configuration of the time base counter (TBC) is shown in Figure 6-1.
b3
b2
b1
b0
b3
b2
b1
b0
1 Hz
2 Hz
4 Hz
8 Hz
16 Hz
32 Hz
64 Hz
128 Hz
256 Hz
512 Hz
1 kHz
2 kHz
4 kHz
8 kHz
16 kHz
(1 Hz)
(2 Hz)
(4 Hz)
(8 Hz)
(16 Hz)
(32 Hz)
(64 Hz)
(128 Hz)
(256 Hz)
(512 Hz)
(1 kHz)
(2 kHz)
(4 kHz)
(8 kHz)
(16 kHz)
TBC7
TBC6
TBC5
TBC4
TBC3
TBC2
TBC1
TBC11
TBC10
TBC9
TBC8
TBC15
TBC14
TBC13
TBC12
R
R
R
TBCR0 READ
TBCR1 READ
TBCR1 WRITE
TBCR0 WRITE
RESET0
Data bus
TBCCLK
(32.768 kHz)
2HzINT
4HzINT
16HzINT
32HzINT
(1/32768TBC)
(1/16384TBC)
(1/8192TBC)
(1/4096TBC)
(1/2048TBC)
(1/1024TBC)
(1/512TBC)
(1/256TBC)
(1/128TBC)
(1/64TBC)
(1/32TBC)
(1/16TBC)
(1/8TBC)
(1/4TBC)
(1/2TBC)
Figure 6-1 Time Base Counter (TBC) Configuration
(when a 32.768 kHz crystal is used for low-speed clock oscillation)
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 ...
Page 171: ......
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 ...
Page 251: ......
Page 255: ...16 4 ML63326 User s Manual Chapter 16 Battery Low Detect Circuit BLD ...
Page 256: ...Chapter 17 17 Power Supply Circuit POWER ...
Page 257: ......
Page 260: ...Appendixes ...
Page 261: ......
Page 321: ...Appendix 60 ML63326 User s Manual Appendix G ...