BS85B12-3 HOLTEK [Holtek Semiconductor Inc], BS85B12-3 Datasheet - Page 102

• Manufacturer Part Number: BS85B12-3
• Description: Touch Key Flash Type 8-Bit MCU with LCD/LED Driver
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

Rev. 1.00
A Duty
B Duty
B Duty
A Duty
B Duty
B Duty
Period
CCRA
Period
Period
CCRA
Period
CCRP
CCRP
ETM, PWM Mode, Edge-aligned Mode, TnCCLR=0
ETM, PWM Mode, Edge-aligned Mode, TnCCLR=1
ETM, PWM Mode, Center-aligned Mode, TnCCLR=0
ETM, PWM Mode, Center-aligned Mode, TnCCLR=1
001b
001b
128
256
If f
The TP1A PWM output frequency = (f
The TP1B_n PWM output frequency = (f
50%.
If the Duty value defined by CCRA or CCRB register is equal to or greater than the Period value,
then the PWM output duty is 100%.
1
1
1
2
SYS
= 16MHz, TM clock source select f
Touch Key Flash MCU with LCD/LED Driver
010b
010b
256
512
2
2
2
4
011b
011b
384
768
3
3
3
6
100b
100b
1024
1022
SYS
512
511
511
511
96
(CCRA 2) 1
(CCRB 2) 1
(CCRB 2) 1
/4) / 512 = f
SYS
SYS
CCRA
CCRB
CCRB
/4) / 512 = f
/4, CCRP = 100b, CCRA = 128 and CCRB = 256,
101b
101b
1280
1024
640
512
512
512
SYS
BS85B12-3/BS85C20-3
/2048 = 7.8125kHz, duty = 128/512 = 25%.
SYS
/2048 = 7.8125kHz, duty = 256/512 =
110b
1021
1021
110b
1536
1021
2042
768
111b
1022
1022
111b
1792
1022
2044
896
February 1, 2011
000b
1024
1023
1023
000b
2046
1023
2046