HT49RA1_14 Datasheet, PDF (1/57 Pages) Holtek Semiconductor Inc – Remote Type 8-Bit MCU with LCD

HT49RA1/HT49CA1
Remote Type 8-Bit MCU with LCD
Features
· Operating voltage: 2.0V~3.6V
· 12 bidirectional I/O lines, 8 input lines,
8 segment output, PC0 (input/output)/REM
· Two external interrupt inputs shared with an I/O line
· 8-bit programmable Timer/Event Counter with
overflow interrupt function
· Single 16-bit programmable timer/event counter
with overflow interrupt function
· RC oscillator and 32768Hz crystal oscillator
· LCD driver with 33´2, 33´3 or 32´4 segments
(C type only), 8 logical output option for
SEG12~SEG19 and 4 I/O port option for
SEG0~SEG3 by changing LCDC register
· 4096´15 program memory
· 160´8 data memory
· Real Time Clock - RTC
· 8-bit prescaler for RTC
· One carrier output (1/2 or 1/3 duty)
· Software LCD, RTC control
· Watchdog Timer function
· Power down and wake-up functions to reduce
power consumption
· Up to 1ms instruction cycle with 4MHz system clock
· 4-level subroutine nesting
· Bit manipulation instruction
· Table read instructions
· 63 powerful instructions
· All instructions executed in one or two machine
cycles
· Low voltage reset/detector function
· 64-pin LQFP package
General Description
The HT49RA1/HT49CA1 is a Remote Type 8-bit MCU
8-bit high performance RISC architecture
microcontroller. With its internal carrier generator and
LCD Driver functions the device is is especially suitable
for multiple I/O remote control product applications. The
usual Holtek MCU features such as power down and
wake-up functions, oscillator options, etc. combine to
ensure user applications require a minimum of external
components.
The benefits of low power consumption, high perfor-
mance, I/O flexibility and low-cost, provide these de-
vices with the versatility to suit a wide range of
application possibilities such as industrial control, con-
sumer products and particularly suitable for use in prod-
ucts such as infrared LCD remote controllers and
various, subsystem controllers, etc.
Device Types
Devices which have the letter ²R² within their part number,
indicate that they are OTP devices offering the advan-
tages of easy and effective program updates, using the
Holtek range of development and programming tools.
These devices provide the designer with the means for
fast and low-cost product development cycles. Devices
which have the letter ²C² within their part number indicate
that they are mask version devices. These devices offer a
complementary device for applications that are at a ma-
ture state in their design process and have high volume
and low cost demands.
Fully pin and functionally compatible with their OTP
sister devices, the mask version devices provide the
ideal substitute for products which have gone beyond
their development cycle and are facing cost-down de-
mands.
In this datasheet, for convenience, when describing
device functions, only the OTP types are mentioned
by name, however the same described functions also
apply to the Mask type devices.
Rev. 1.10
1
March 30, 2014