PCA84C646 Philips Semiconductors, PCA84C646 Datasheet - Page 9

• Manufacturer Part Number: PCA84C646
• Description: Microcontrollers for TV tuning control and OSD applications
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1995 Jun 15
handbook, full pagewidth
handbook, full pagewidth
Microcontrollers for TV tuning
control and OSD applications
f
127
63
01
m
or
00
xtal
3
f PWM =
128
64
or
f xtal
3
decimal value PWM data latch
1
6 or 7-BIT PWM DATA LATCH
Fig.5 Example PWM0n output patterns (P6LVL/P7LVL = 0).
6 or 7-BIT DAC PWM
2
CONTROLLER
Fig.4 Block diagram of 6-bit or7-bit PWM DAC.
3
Q
Q
m
P6LVL/P7LVL
9
(1-BIT)
m + 1
m + 2
DP0n data
I/O
PCA84C646; PCA84C846
PWMnE
128
64
or
Preliminary specification
DP0n/PWM0n
MED177
1
MLC261