LAPIS Semiconductor ML610421, User Manual, Page: 294 / 437

ML610Q421/ML610Q422/ML610421 User’s Manual
Chapter 23 Melody Driver
23 – 4
23.2.3 Melody 0 Tempo Code Register (MD0TMP)
Address: 0F2C1H
Access: R/W
Access size: 8 bits
Initial value: 00H
7 6 5 4 3 2 1 0
MD0TMP
   
M0TM3 M0TM2 M0TM1 M0TM0
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial value 0 0 0 0 0 0 0 0
MD0TMP is a special function register (SFR) to set the tempo code of a melody when melody mode is selected and the
output mode of a buzzer sound waveform when buzzer mode is selected.
[Description of Bits]
•
M0TM3, M0TM2, M0TM1, M0TM0 (bits 3-0)
When melody mode is selected (BZMD bit = “0”)
M0TM3 M0TM2 M0TM1 M0TM0 Description
0 0 0 0
♪ = 480 (initial value)
0 0 0 1
♪ = 480
0 0 1 0
♪ = 320
0 0 1 1
♪ = 240
0 1 0 0
♪ = 192
0 1 0 1
♪ = 160
0 1 1 0
♪ ≅
137
0 1 1 1
♪ = 120
1 0 0 0
♪ ≅
107
1 0 0 1
♪ = 96
1 0 1 0
♪ ≅
87
1 0 1 1
♪ = 80
1 1 0 0
♪ ≅
74
1 1 0 1
♪ ≅
69
1 1 1 0
♪ = 64
1 1 1 1
♪ = 60
When buzzer mode is selected (BZMD bit = “1”)
M0TM3 M0TM2 M0TM1 M0TM0 Description
* * 0 0 Intermittent 1 output (initial value)
* * 0 1 Intermittent 2 output
* * 1 0 Single sound output
* * 1 1 Continuous sound output