MC68HC711K4CFN4 Datasheet, PDF (77/80 Pages) Motorola, Inc – 8-Bit Microcontroller

PCLK3 —Pulse-Width Channel 3 Clock Select
0 = Clock B is source
1 = Clock S is source
PCLK2 —Pulse-Width Channel 2 Clock Select
0 = Clock A is source
1 = Clock S is source
PCLK1 —Pulse-Width Channel 1 Clock Select
0 = Clock A is source
1 = Clock S is source
PPOL[4:1] —Pulse-Width Channel x Polarity
0 = PWM channel x output is low at the beginning of the clock cycle and goes high when duty count
is reached
1 = PWM channel x output is high at the beginning of the clock cycle and goes low when duty count
is reached
PWSCAL —Pulse-Width Modulation Timer Prescaler
$0062
Bit 7
6
5
4
3
2
1
Bit 0
7
6
5
4
3
2
1
0
RESET:
0
0
0
0
0
0
0
0
Scaled clock S is generated by dividing clock A by the value in PWSCAL, then dividing the result by 2.
If PWSCAL = $00, divide clock A by 256, then divide the result by 2.
PWEN —Pulse-Width Modulation Timer Enable
$0063
Bit 7
6
5
TPWSL DISCP
—
RESET:
0
0
0
4
3
2
1
Bit 0
—
PWEN4 PWEN3 PWEN2 PWEN1
0
0
0
0
0
TPWSL —PWM Scaled Clock Test Bit (TEST)
Factory test only
DISCP —Disable Compare Scaled E Clock (TEST)
Factory test only
Bits [5:4] —Not implemented
Always read zero
PWEN[4:1] —Pulse-Width Channel 4–1
0 = Channel disabled
1 = Channel enabled
PWCNT1–PWCNT4 —Pulse-Width Modulation Timer Counter 1 to 4
$0064–$0067
$0064 Bit 7
6
5
4
3
2
1
Bit 0 PWCNT1
$0065 Bit 7
6
5
4
3
2
1
Bit 0 PWCNT2
$0066 Bit 7
6
5
4
3
2
1
Bit 0 PWCNT3
$0067 Bit 7
6
5
4
3
2
1
Bit 0 PWCNT4
RESET:
0
0
0
0
0
0
0
0
PWCNT1–PWCNT4
Begins count using whichever clock was selected
M68HC11 K Series
MC68HC11TS/D
MOTOROLA
77