HT46R75D-3 Datasheet, PDF (1/60 Pages) Holtek Semiconductor Inc – Dual Slope A/D Type 8-Bit OTP MCU with LCD

HT46R75D-3
Dual Slope A/D Type 8-Bit OTP MCU with LCD
Features
· Operating voltage:
f_SYS=4MHz: 2.2V~5.5V
f_SYS=8MHz: 3.3V~5.5V
· Three system oscillators:
External Crystal oscillator -- HXT
External RC oscillator -- ERC
Internal High Frequency RC oscillator -- HIRC
· Up to 22 bidirectional I/O lines
· One external interrupt input shard with an I/O lines
· One 8-bit and two 16-bit programmable timer/event
counter with overflow interrupt and an 8-bit prescaler
· LCD driver with 24´8 or 28´4 segments
· LCD bias type: 1/3 bias R type or C type
· Program Memory: 8K´16
· Data Memory: 192´8
· Single differential input channel dual slope Analog to
Digital Converter with Operational Amplifier
· Watchdog Timer with regulator power
· Buzzer output
· Internal 12kHz RC oscillator
· External 32.768kHz Crystal oscillator
· Power-down and wake-up features reduce power
consumption
· Voltage regulator (3.3V) and charge pump
· Embedded voltage reference generator (1.5V)
· 8 subroutine nesting levels
· 16-bit table read instruction
· Low Voltage Reset function
· One vibration sensor input
· Four touch-key inputs
· Bit manipulation instruction
· Up to 0.5ms instruction cycle with 8MHz system clock
· 63 powerful instructions
· All instructions in 1 or 2 machine cycles
· 64-pin LQFP package
General Description
The HT46R75D-3 is an 8-bit high performance, RISC
architecture microcontroller device specifically de-
signed for A/D with LCD applications that interface di-
rectly to analog signals, such as those from sensors.
The advantages of low power consumption, I/O flexibil-
ity, 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 versa-
tility of these devices to suit for a wide range of AD with
LCD application possibilities such as sensor signal pro-
cessing, scales, consumer products, subsystem con-
trollers, etc.
Rev. 1.00
1
July 19, 2011