GENERAL DESCRIPTION
The ST63140, 142, 126, 156 microcontrollers are members of the 8-bit HCMOS ST631xx family, a series of devices specially oriented to TV applications. Different ROM size and peripheral configurations areavailable to give the maximum application and cost flexibility.

■ 4.5 to 6V operating Range
■ 8MHz Maximum Clock Frequency
■ User Program ROM: 7948 bytes
■ Reserved Test ROM: 244 bytes
■ Data ROM: user selectable size
■ Data RAM: 256 bytes
■ Data EEPROM: 128 bytes
■ 40-Pin Dual in Line Plastic Package for the ST63126, 156
■ 28-Pin Dual in Line Plastic Package for the ST63140, 142
■ Up to 18 software programmable general purpose Inputs/Outputs, including 8 direct LED driving Outputs
■ 3 Inputs for keyboard scan (KBY0-2)
■ Up to 4 high voltage outputs (BSW0-3)
■ 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
■ Up to Four 6-bit PWM D/A Converters
■ 62.5kHz Output pin
■ 14 bit counter for voltage synthesis tuning (ST63156, ST63140)
■ AFC A/D converter with 0.5V resolution
■ Four interrupt vectors (IRIN/NMI, Timer 1 & 2, VSYNC.)
■ On-chip clock oscillator
■ 5 Lines by 15 Characters On-Screen Display Generator with 128 Characters (2 banks)
■ All ROM types are supported by pin-to-pin EPROM and OTP versions.
■ The development tool of the ST631xx microcontrollers consists of the ST63TVS-EMUemulation and development system to be connected via a standard RS232 serial line to an MS-DOS Personal Computer.

GENERAL DESCRIPTION
The ST63E140/T140, E142/T142, E126/T126, E156/T156 microcontrollers are members of the 8- bit HCMOS ST631xx family, a series of devices specially oriented to TV applications. Different peripheral configurations are available to give the maximum application and cost flexibility.

■ 4.5 to 6V operating Range
■ 8MHz Maximum Clock Frequency
■ User Program ROM: 7948 bytes
■ Reserved Test ROM: 244 bytes
■ Data ROM: user selectable size
■ Data RAM: 256 bytes
■ Data EEPROM: 128 bytes
■ 40-Pin Dual in Line Plastic Package for the ST63126, 156
■ 28-Pin Dual in Line Plastic Package for the ST63140, 142
■ Up to 18 software programmable general purpose Inputs/Outputs, including 8 direct LED driving Outputs
■ 3 Inputs for keyboard scan (KBY0-2)
■ Up to 4 high voltage outputs (BSW0-3)
■ 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
■ Up to Four 6-bit PWM D/A Converters
■ 62.5kHz Output pin
■ 14 bit counter for voltage synthesis tuning (ST63156, ST63140)
■ AFC A/D converter with 0.5V resolution
■ Four interrupt vectors (IRIN/NMI, Timer 1 & 2, VSYNC.)
■ On-chip clock oscillator
■ 5 Lines by 15 Characters On-Screen Display Generator with 128 Characters (2 banks)
■ All ROM types are supported by pin-to-pin EPROM and OTP versions.
■ The development tool of the ST631xx microcontrollers consists of the ST63TVS-EMUemulation and development system to be connected via a standard RS232 serial line to an MS-DOS Personal Computer.
■ EPROM programming board ST63E1XX-EPB