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ST62T94B8 Dataheets PDF



Part Number ST62T94B8
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description 8-BIT HCMOS MCU
Datasheet ST62T94B8 DatasheetST62T94B8 Datasheet (PDF)

ST6294 8-BIT HCMOS MCU WITH A/D CONVERTER, EEPROM & AUTO-RELOAD TIMER PRELIMINARY DATA 3 to 6.0V Supply Operating Range 8 MHz Maximum Clock Frequency -25 to +85°C Operating Temperature Range Run, Wait & Stop Modes 5 different interrupt vectors Look-up table capability in ROM User ROM: 3868 bytes Data ROM: User selectable size (in program ROM) Data RAM: 128 bytes EEPROM: 128 bytes PDIP28, PSO28 packages 21 fully software programmable I/O as: – Input with pull-up resistor – Input w.

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ST6294 8-BIT HCMOS MCU WITH A/D CONVERTER, EEPROM & AUTO-RELOAD TIMER PRELIMINARY DATA 3 to 6.0V Supply Operating Range 8 MHz Maximum Clock Frequency -25 to +85°C Operating Temperature Range Run, Wait & Stop Modes 5 different interrupt vectors Look-up table capability in ROM User ROM: 3868 bytes Data ROM: User selectable size (in program ROM) Data RAM: 128 bytes EEPROM: 128 bytes PDIP28, PSO28 packages 21 fully software programmable I/O as: – Input with pull-up resistor – Input without pull-up resistor – Input with interrupt generation – Open-drain or push-pull outputs – Analog Inputs 8 I/O lines can sink up to 20mA for direct LED or TRIAC driving 8 bit counter with a 7-bit programmable prescaler (Timer1) 8 bit auto-reload timer with 7-bit programmable prescaler (AR Timer) Digital Watchdog 8 bit A/D Converter with up to 13 analog inputs 8 bit Synchronous Peripheral Interface (SPI) On-chip clock oscillator (Quartz Crystal or Ceramic) Power-on Reset Clock output 9 powerful addressing modes The development tool of the ST6294 microcontrollers consists of the ST626x-EMU emulation and development system connected via a standard RS232 serial line to an MS-DOS Personal Computer 1 PDIP28 1 PSO28 (Ordering Information at the end of the datasheet) October 1993 This is Preliminary Data from SGS-THOMSON. Details are subject to change without notice. 1/26 ST6294 Figure 1. ST6294 Pin Configuration PB0 PB1 TEST PB2 PB3 PB4 PB5 ARTIMin / PB6 ARTIMout / PB7 Ain / PA0 VD D VS S Ain / PA1 Ain / PA2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 PC0 / Ain 27 PC1 / TIM1 / Ain 26 PC2 / Sin / Ain 25 PC3 / Sout / Ain 24 PC4 / SCK / Ain 23 CLKout 22 RESET 21 OSCout 20 OSCin 19 PA7 / Ain 18 PA6 / Ain 17 PA5 / Ain 16 PA4 / Ain 15 PA3 / Ain VR0A1822 Figure 2. ST6294 Block Diagram TEST TEST INTERRUPT USER PROGRAM ROM 3884 Bytes DATA ROM USER SELECTABLE DATA RAM 12 8 Bytes DATA EEPROM 12 8 Bytes CL Ko ut PC STACK LEVEL 1 STACK LEVEL 2 STACK LEVEL 3 STACK LEVEL 4 STACK LEVEL 5 STACK LEVEL 6 OSCILLATOR + DIVIDER 8 BIT CORE POWER SUPPLY RESET LVI OS Cin OSCou t VDD VS S RESET 2/26 PORT A PORT B PORT C TIMER 1 AUTORELOAD TIMER PA0 ..PA3 PA4..PA7 / Ain PB0..PB3 / 20mA SINK PB4..PB5 / 20mA SINK PB6 / ARTIMin / 20mA SINK PB7 / ARTIMout / 20mA SINK PC0 / Ain PC1 / TIM1 / Ain PC2 / Sin / Ain PC3 / Sout / Ain PC4 / SCK / Ain Ain = Analog Input SERIAL PERIPHERAL INTERFACE (SPI) DIGITAL WATCHDOG 8 BIT A/D CONVERTER VR0A1823 ST6294 GENERAL DESCRIPTION The ST6294 microcontroller is member of the 8-bit HCMOS ST62xx family, a series of devices oriented to low-medium complexity applications. All ST62xx members are based on a building block approach: a common core is surrounded by a combination of onchip peripherals (macrocells). The macrocells of the ST6294 are: the Timer peripheral that includes an 8-bit counter with a 7-bit software programmable prescaler (Timer1), the 8bit Auto-reload Timer with 7 bit programmable prescaler (AR Timer), the 8-bit A/D Converter with up to 13 analog inputs (A/D inputs are alternate functions of I/O pins), the Digital Watchdog (DWD) and an 8-bit Serial synchronous Peripheral Interface (SPI). In addition, these devices offer 128 bytes of EEPROM for non volatile data storage. The ST6294 is a version of the ST6265 specifically tailored to be used in telephone set applications. The only difference is that a CKOUT pin is provided instead of the NMI pin. For this reason this datasheet only contains information relating to the differences to the ST6265, and thus should be read in conjunction with the ST6265 datasheet. The ST62E94 EPROM version is available for prototypes and low-volume production; also OTP version is available. PIN DESCRIPTION VDD and VSS. Power is supplied to the MCU using these two pins. VDD is power and VSS is the ground connection. OSCin and OSCout. These pins are internally connected with the on-chip oscillator circuit. A quartz crystal, a ceramic resonator or an external clock signal can be connected between these two pins in order to allow the correct operation of the MCU with various stability/cost trade-offs. The frequency at OSCin and OSCout is internally divided by 1, 2 or 4 by a software controlled divider.The OSCin pin is the input pin, the OSCout pin is the output pin. RESET. The active low RESET pin is used to restart the microcontroller to the beginning of its program. TEST. The TEST must be held at VSS for normal operation (an internal pull-down resistor selects normal operating mode if TEST pin is not connected). CKOUT. This clock pin outputs the oscillator frequency divided by 2 (fOSC/2). This function can be disabled by software to reduce power consumption. PC1/TIM1/Ain. This pin can be used as a Port C I/O bit, as Timer 1 I/O pin or as analog input for the on-chip A/D converter. If programmed to be the Timer 1 pin, in input mode it is connected to the prescaler and acts as external timer clock or as control gate for the internal timer clock. In the.


ST6294 ST62T94B8 ST62T94M8


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