BS85B12-3 HOLTEK [Holtek Semiconductor Inc], BS85B12-3 Datasheet - Page 88

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

Note:
Rev. 1.00
TM O/P Pin
TM O/P Pin
Flag TnAF
TCKn pin
CCRA Int.
Flag TnPF
CCRP Int.
1. Counter stopped by CCRA
2. CCRP is not used
3. The pulse is triggered by the TCKn pin or by setting the TnON bit high
4. A TCKn pin active edge will automatically set the TnON bit high
5. In the Single Pulse Mode, TnIO [1:0] must be set to 11 and can not be changed.
TnPAU
TnPOL
CCRA
CCRP
TnON
Counter Value
(TnOC=1)
(TnOC=0)
However a compare match from Comparator A will also automatically clear the TnON bit and thus
generate the Single Pulse output trailing edge. In this way the CCRA value can be used to control the
pulse width. A compare match from Comparator A will also generate a TM interrupt. The counter can
only be reset back to zero when the TnON bit changes from low to high when the counter restarts. In
the Single Pulse Mode CCRP is not used. The TnCCLR and TnDPX bits are not used in this Mode.
Software
Trigger
Pulse Width
set by CCRA
Touch Key Flash MCU with LCD/LED Driver
Cleared by
CCRA match
No CCRP Interrupts
generated
Counter stopped
by CCRA
TCKn pin
Trigger
Auto. set by
TCKn pin
Single Pulse Generation
Single Pulse Mode
Software
Trigger
82
Pause
Resume
BS85B12-3/BS85C20-3
TnM [1:0] = 10 ; TnIO [1:0] = 11
Software
Trigger
Counter Stops
by software
Output Inverts
when TnPOL = 1
Software
Clear
Counter Reset when
TnON returns high
Software
Trigger
February 1, 2011
Time