HT46R74D-1

` Operating voltage:
f<sub>SYS</sub> = 4MHz: 2.2V~5.5V
f<sub>SYS</sub> = 8MHz: 3.3V~5.5V
` 10 bidirectional I/O lines and two ADC inputs
` Two external interrupts inputs shared with I/O lines
` One 8-bit and one 18-bit programmable timer/event counter with overflow interrupt and pre-scaler
` LCD driver with 15*4, 16*3 or 16*2 segments
` 4K*15 program memory with partial lock function
` 96*8 data memory RAM
` Single differential input channel dual slope Analog to Digital Converter with Operational Amplifier.
` Watchdog Timer with regulator power
` Buzzer output
` External 32768Hz RTC oscillator
` Integrated RC or crystal oscillator
` Power-down and wake-up functions reduce power consumption
` Internal 3.3V Voltage regulator and charge pump
` Embedded voltage reference generator - 1.5V
` 6-level subroutine nesting
` Bit manipulation instruction
` 15-bit table read instruction
` Up to 0.5s instruction cycle with 8MHz system clock at V<sub>DD</sub>=5V
` 63 powerful instructions
` All instructions in 1 or 2 machine cycles
` Low voltage reset/detector function
` 56-pin SSOP package

Supply Voltage ...........................V_SS-.3V to V_SS+6.0V
Input Voltage..............................V_SS-.3V to V_DD+0.3V
I_OL Total ..........................................................150mA
Total Power Dissipation ..................................500mW
Storage Temperature ...........................-50 to 125
Operating Temperature...........................-40 to 85
I_OH Total..........................................................-100mA

Note: These are stress ratings only. Stresses exceeding the range specified under "Absolute Maximum Ratings" may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability

The HT46R74D-1 is an 8-bit high performance, RISC architecture microcontroller device specifically designed for A/D with LCD applications that interface directly to analog signals, such as those from sensors. The advantages of low power consumption, I/O flexibility, timer functions, oscillator options, Dual slope A/D converter, LCD display, HALT and wake-up functions, watchdog timer, as well as low cost, enhance the versatility of these devices HT46R74D-1 to suit for a wide range of AD with LCD application possibilities such as sensor signal processing, scales, consumer products, subsystem controllers, etc.