PCA84C646P PHILIPS [NXP Semiconductors], PCA84C646P Datasheet - Page 4

• Manufacturer Part Number: PCA84C646P
• Description: Microcontrollers for TV tuning control and OSD applications
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
2
The PCA84C646 and PCA84C846 are 8-bit
microcontrollers with enhanced OSD and VST functions.
The PCA84C646 and PCA84C846 are members of the
PCA84C640 CMOS microcontroller family. They include
the PCF84CXXXA processor core, 6 or 8 kbytes of ROM
and 192 bytes of RAM.
I/O requirements are adequately catered for with
13 general purpose bidirectional I/O lines plus 16 function
combined I/O lines. One 14-bit PWM analog control,
3 AFC inputs (4-bit DAC + comparator) for VST and four
6-bit and 7-bit PWM analog control outputs are provided.
3
1995 Jun 15
PCA84C646P
PCA84C846P
Microcontrollers for TV tuning
control and OSD applications
TYPE NUMBER
GENERAL DESCRIPTION
ORDERING INFORMATION
SDIP42
NAME
plastic shrink dual in-line package; 42 leads (600 mil)
4
In addition to all these features a master-slave I
interface, 2 directly testable lines and an enhanced OSD
facility for flexible screen format (maximum of 64 character
types) are also provided.
The on-chip Phase-Locked Loop (PLL) oscillator for OSD
operation considerably reduces the radiation generated by
the RC or LC oscillator. An 8-bit timer is integrated on-chip
with a 5-bit prescaler. Another 8-bit counter with
Schmitt-trigger input is used for clock/timer function
application.
Figure 1 shows the block diagram of the PCA84C646 and
PCA84C846.
DESCRIPTION
PACKAGE
PCA84C646; PCA84C846
Preliminary specification
SOT270-1
VERSION
2
C-bus