w83l950d Winbond Electronics Corp America, w83l950d Datasheet - Page 57
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w83l950d
Manufacturer Part Number
w83l950d
Description
Peripheral Personal Computer Keyboard Controller
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83L950D.pdf
(105 pages)
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Oscillator
F(Xin)
(f(Xcin) in low-speed mode
12.3 Prescaler 12 (PRE 12)
12.4 Timer 1 (T1)
12.5 Timer 2 (T2)
12.6 Timer XY mode register (TM)
Divider
1/16
SFR address
Default value
SFR address
Default value
SFR address
Default value
SFR address
Default value
Bit 7: Timer Y Count stop bit
Bit 6: CNTR1 active edge selection bit
Timer 1,2 count stop bit
= 0 Count start.
= 1 Count stop.
= 0 Interrupt at falling edge for CNTR1 interrupt.
Count at rising edge in event counter mode.
Output begins at H in pulse output mode.
Count at H duration in PWM mode.
Prescaler 12 latch (8)
0xB0
0xff
0xB1
0x01
0xB2
0xff
0xB3
0x88
Fig.11.3 Timer 1, 2 Block Diagram
Data bus
- 48 -
Timer 1 latch (8)
Timer 1 (8)
Timer 2 latch (8)
Timer 2 (8)
W83L950D
To timer 2 interrupt
request bit
To timer 1 interrupt
request bit
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