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COP8FG Datasheet(PDF) 21 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # COP8FG
Description  8-Bit CMOS ROM Based and OTP Microcontrollers with 8k to 32k Memory, Two Comparators and USART
PDF  59 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

COP8FG Datasheet(HTML) 21 Page - National Semiconductor (TI)

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6.0 Timers (Continued)
6.3 TIMER CONTROL FLAGS
The control bits and their functions are summarized below.
TxC3
Timer mode control
TxC2
Timer mode control
TxC1
Timer mode control
TxC0
Timer Start/Stop control in Modes 1 and 2 (Pro-
cessor Independent PWM and External Event
Counter), where 1 = Start, 0 = Stop
Timer Underflow Interrupt Pending Flag in
Mode 3 (Input Capture)
TxPNDA Timer Interrupt Pending Flag
TxENA
Timer Interrupt Enable Flag
1 = Timer Interrupt Enabled
0 = Timer Interrupt Disabled
TxPNDB Timer Interrupt Pending Flag
TxENB
Timer Interrupt Enable Flag
1 = Timer Interrupt Enabled
0 = Timer Interrupt Disabled
The timer mode control bits (TxC3, TxC2 and TxC1) are detailed below:
Mode
TxC3
TxC2
TxC1
Description
Interrupt A
Source
Interrupt B
Source
Timer
Counts On
1
1
0
1
PWM: TxA Toggle
Autoreload RA
Autoreload RB
t
C
1
0
0
PWM: No TxA
Toggle
Autoreload RA
Autoreload RB
t
C
2
0
0
0
External Event
Counter
Timer
Underflow
Pos. TxB Edge
Pos. TxA
Edge
0
0
1
External Event
Counter
Timer
Underflow
Pos. TxB Edge
Pos. TxA
Edge
3
0
1
0
Captures:
Pos. TxA Edge
Pos. TxB Edge
t
C
TxA Pos. Edge
or Timer
TxB Pos. Edge
Underflow
1
1
0
Captures:
Pos. TxA
Neg. TxB
t
C
TxA Pos. Edge
Edge or Timer
Edge
TxB Neg. Edge
Underflow
0
1
1
Captures:
Neg. TxA
Neg. TxB
t
C
TxA Neg. Edge
Edge or Timer
Edge
TxB Neg. Edge
Underflow
1
1
1
Captures:
Neg. TxA
Neg. TxB
t
C
TxA Neg. Edge
Edge or Timer
Edge
TxB Neg. Edge
Underflow
www.national.com
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