HT45R22E
Remote Type 8-bit OTP MCU with EEPROM
Features
CPU Features
·
Operating voltage:
·
Table read instructions
·
63 powerful instructions
·
4-level subroutine nesting
·
Bit manipulation instruction
·
Low voltage reset function
·
20/24-pin SOP package types
f
SYS
= 4MHz: 2.2V~3.6V
·
Program Memory: 4K´15
·
Data Memory: 128´8
·
Embedded 1024´8 EEPROM
·
Up to 1ms instruction cycle with 4MHz system clock
at V
DD
= 3V
·
Idle/Sleep mode and wake-up functions to reduce
Peripheral Features
·
Up to 22 bidirectional I/O lines
·
Software controlled 4-SCOM lines LCD COM driver
power consumption
·
Oscillator types:
with 1/2 bias
·
External interrupt input shared with an I/O line
·
Two 8-bit programmable Timer/Event Counter with
External high freuency Crystal -- HXT
External RC -- ERC
Internal high frequency RC -- HIRC
External low frequency crystal -- LXT
Internal low frequency RC -- LIRC
·
Four operational modes: Normal, Slow, Idle, Sleep
·
Fully integrated internal 4095kHz oscillator requires
overflow interrupt and prescaler
·
Time-Base function
·
Programmable Frequency Divider - PFD shared
with I/O line
·
Two integrated operational amplifiers with interrupt
no external components
·
Watchdog Timer function
·
LIRC oscillator function for watchdog timer
·
All instructions executed in one or two instruction
function - one with programmable gain control
·
Single comparator with interrupt and low power
consumption
cycles
General Description
The device is an 8-bit high performance, RISC architec-
ture microcontrollers specifically designed for opera-
tional amplifier applications. The usual Holtek
microcontroller features of low power consumption, I/O
flexibility, timer functions, oscillator options, internal
comparator, internal operational amplifiers, power down
and wake-up functions, watchdog timer and low voltage
reset, combine to provide the device with a wide range
of functional options while still maintaining a high level
of cost effectiveness. The fully integrated system oscil-
lator HIRC, which requires no external components and
which has three frequency selections, opens up a huge
range of new application possibilities for this device,
some of which may include remote control appliances,
car reversing systems, level meters, consumer prod-
ucts, household appliances subsystem controllers, etc.
Rev. 1.00
1
March 17, 2010
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
