PCA84C922AP PHILIPS [NXP Semiconductors], PCA84C922AP Datasheet - Page 16

• Manufacturer Part Number: PCA84C922AP
• Description: Microcontrollers for universal infrared remote transmitter applications
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
1997 Oct 22
handbook, full pagewidth
handbook, full pagewidth
handbook, full pagewidth
Microcontrollers for universal infrared
remote transmitter applications
ILOUT
ILOUT
ILOUT
ILOUT
ILOUT
f osc
f osc
f osc
4
4
f osc
f osc
f osc
f osc
f osc
f osc
4
4
4
4
CASE 1
CASE 2
CASE 1
CASE 2
start
on-time pulse width = 6
start
start
on-time pulse width = 10
On-time Register = 6
on-time pulse width = 10
Fig.11 CASE 1 shows a typical pulse train; CASE 2 shows the same pulse
Fig.12 CASE 1 shows a typical long pulse; CASE 2 shows the same long
On-time Register = 10
On-time Register = 10
train after being modulated with a frequency of
pulse after being modulated with a frequency of
2 = 8
Fig.13 Continuous pulse train (PWM = 1).
2 = 12
2 = 12
off-time pulse width = 10
Off-time Register = 10
off-time pulse width = 10
Off-time Register = 10
number of pulses = 3
number of pulses = 2
16
2 = 12
2 = 12
PCA84C922; PCA84C923
1
4
1
f
osc
4
f
interrupt to CPU
osc
(HF = 1).
(HF = 1).
software time
software time
Product specification
interrupt to CPU
start
MBE411
MBE410
MBE412