HT45R37_11 Datasheet, PDF (1/100 Pages) Holtek Semiconductor Inc – TinyPowerTM C/R-F Type 8-Bit OTP MCU

HT45R37
TinyPower^TM C/R-F Type 8-Bit OTP MCU
Technical Document
· Tools Information
· FAQs
· Application Note
- HA0075E MCU Reset and Oscillator Circuits Application Note
Features
· Operating voltage:
f_SYS=32768Hz: 2.2V~5.5V
f_SYS=4MHz: 2.2V~5.5V
f_SYS=8MHz: 3.0V~5.5V
f_SYS=12MHz: 4.5V~5.5V
· OTP Program Memory: 4K´15
· RAM Data Memory: 160´8
· 27 bidirectional I/O lines
· Three external interrupt input shared with I/O lines
· Two 8-bit programmable Timer/Event Counter
with overflow interrupt and 7-stage prescaler
· External C/R to F converter
· 16-Channel Capacitor/Resistor sensor inputs
· Integrated Crystal, IRC, ERC and RTC oscillator
· Fully integrated internal RC oscillator available with
three frequencies: 4MHz, 8MHz or 12MHz
· Watchdog Timer function
· _{LIRC or RTC oscillator function for watchdog timer}
· _{PFD and Buzzer for audio frequency generation}
· Dual Serial Interfaces: SPI and I²C
· 4 operating modes: normal, slow, idle and sleep
· 6-level subroutine nesting
· 6-channel 12-bit resolution A/D converter
· 2-channel 12-bit PWM output shared with I/O line
· Low voltage reset function - 2.1V, 3.15V, 4.2V
· Low voltage detect function - 2.2V, 3.3V, 4.4V
· Bit manipulation instruction
· 15-Bit table read instructions
· 63 powerful instructions
· Up to 0.33ms instruction cycle with 12MHz system
clock at V_DD=5V
· All instructions executed in one or two machine
cycles
· Idle/Sleep mode and wake-up functions to reduce
power consumption
· Time-Base and RTC interrupt
· _{20-pin DIP/SOP, 24/28-pin SKDIP/SOP/SSOP,}
32-pin QFN and 44-pin QFP packages
General Description
The HT45R37 is a TinyPower^TM C/R to F Type 8-bit high
performance RISC architecture microcontroller. As a C/R
to F type of MCU, the device can interface to 16 external
C or R type sensors and convert their values to a fre-
quency value for processing. In addition its internal A/D
converter allows the device to interface directly to analog
signals and its integrated dual channel Pulse Width Modu-
lators allows control of external motors, LEDs etc.
With their fully integrated SPI and I²C functions, design-
ers are provided with a means of easy communication
with external peripheral hardware. The benefits of inte-
grated A/D, C/R to F converter, and PWM functions, in
addition to low power consumption, high performance,
I/O flexibility and low-cost, provides the device with the
versatility for a wide range of products in the home appli-
ance and industrial application areas. Some of these
products could include electronic metering, environmen-
tal monitoring, handheld instruments, electronically con-
trolled tools, motor driving in addition to many others.
The unique Holtek TinyPower technology also gives the
devices extremely low current consumption characteris-
tics, an extremely important consideration in the present
trend for low power battery powered applications. The
usual Holtek MCU features such as power down and
wake-up functions, oscillator options, programmable
frequency divider, etc. combine to ensure user applica-
tions require a minimum of external components.
Rev. 1.20
1
February 25, 2011