NORDMENDE SPECTRA CV 630 1.653 J 18 F23-11S CHASSIS ICC7 ST6391B1/BC ICC7-B02 uCONTROLLER VIEW

GENERAL DESCRIPTION
The ST639xmicrocontrollers aremembers of the 8-
bit HCMOS ST638x family, a series of devices specially
orientedto TVapplications.DifferentROMsize
and peripheral configurations are available to give
the maximum application and cost flexibility. All
ST639xmembers are based on a building block approach:
a common core is surroundedbya combination
of on-chip peripherals (macrocells) available
from a standard library. These peripherals are designed
with the same Core technology providing full
compatibility and short design time. Many of these
macrocells are specially dedicated to TV applications.
Themacrocells of the ST639x family are: two
Timer peripherals each including an 8-bit counter
with a 7-bit software programmable prescaler
(Timer), a digital hardware activated watchdog
function(DHWD), a 14-bit voltage synthesis tuning
peripheral, a Serial Peripheral Interface (SPI), up
to six 6-bit PWMD/A converters, an AFC A/D converter
with 0.5V resolution, an on-screen display
(OSD) with 15 characters per line and 128 characters
(in two banks each of 64 characters). In addition
the following memory resources are available:
program ROM (up to 20K), data RAM (256 bytes),
EEPROM(up to 384 bytes). Refer to pin configurations
figures and to ST639x device summary (Table
1) for the definition of ST639x family members
and a summary of differences among the different
types.

4.5 to 6V supply operating range
8MHz Maximum Clock Frequency
User Program ROM: Up to 20140 bytes
Reserved TestROM:Up to 340 bytes
Data ROM: User selectable size
Data RAM: 256 bytes
Data EEPROM: Up to 384 bytes
42-Pin Shrink Dual in Line Plastic Package
Up to 23 software programmable general purpose
Inputs/Outputs, including 2 direct LED
driving Outputs
Two Timers each including an 8-bit counter with
a 7-bit programmable prescaler
Digital Watchdog Function
Serial Peripheral Interface (SPI) supporting
S-BUS/ I2C BUS and standard serial protocols
SPI for external frequency synthesis tuning
Up to Six 6-Bit PWMD/A Converters
AFC A/D converter with 0.5V resolution
Five interrupt vectors (IRIN/NMI, Timer 1 & 2,
VSYNC,PWR INT.)
On-chip clock oscillator
5 Lines by 15 Characters On-Screen Display
Generator with 128 Characters
All ROM types are supported by pin-to-pin
EPROMand OTP versions.
The development tool of the ST639x microcontrollers
consists of the ST638x-EMUemulation
and development system to be connected via a
standard RS232 serial line to an MS-DOS Personal
Computer.