YKP1568VG5
8-
BIT MICROCONTROLLER FOR REMOTE CONTROL TRANSMITTERS
The YKP1568VG5 is stand-alone microcontroller designate for use in remote
control transmitters for a wide range of applications. The YKP1568VG5 for this purpose
provides number of dedicated hardware functions for remote controller applications
These include the following additional blocks to the YKP1568VG X core:
- Interrupt Gate
- Hardware Modulator
- Output Driver
- Watchdog Timer.
When the transmitter is not in use the microcontroller is in STOP mode and the
oscillator is HALTED. The AND gate from P1 Port line provides the wake-up to end STOP
mode.
The Hardware Modulator produces pulse bursts according to the required protocol.
By software the `ON-time` and the `OFF-time` of each pulse and the number of pulses are
controlled.
The Output Driver can handle sufficient current to drive a single transistor, and this
can provide the required current for the LED.
The Watchdog Timer will reset the YKP1568VG5 when it has not been reloaded (
reset ) in time, because the program has run out of sequence ( endless loop, continuous
IDLE mode, etc. ). During STOP mode the oscillator is halted, so then the Watchdog Timer
is not running.
Device is functionally identical to the PCA84c122A, Philips.
FEATURES.
Two test input T0 ( ANDed with P1 input lines ), T1
3 single-level vectored interrupt sources: external ( T0/INT and Port 1, for keypad press
wake-up functions), timer/counter ( T1 ) and hardware modulator interrupt
8-bit programmable timer/counter with 5-bit pre-scalier
On-board oscillator 1MHz to 6MHz.
Single supply voltage from 2.0 V to 5.5 V.
Operating temperature range : -20 to +50
0
C
Power saving modes: Idle and Stop modes are provided
`Hardware Modulator` that provides pulse bursts of which the `on` time and `off` time of
each pulse (i.e. duty cycle) and the number of pulses are programmable
One output line from the `Hardware Modulator` to control the driver transistor for the
IR-LED. Capable of sinking 27 mA at Vdd=2.0V, Vout=1.0V
Watchdog Timer to keep the transmitter from being locked or malfunction.
Automatic system reset is generated by the WDT if the timer is not reset before overflow
from counting within a certain period of time.
DC CHARESTERISTICS.
Supply voltage, V
Supply current operating mode, mA
Operating crystal frequency, MHz
Sink current LOW, mA
Pull-up output source current HIGT,
µA
Sink current LOW (for pulse output OUT), mA
Source current HIGT (for pulse output OUT), mA
Korzhenevskogo 12, Minsk, 220064, Republic of
Belarus
Fax:
+375 (17) 278 28 22,
Phone: +375 (17) 278 07 11, 277 24 70, 277 24 61,
277 69 16
E-mail: belms@belms.belpak.minsk.by
URL: www.bms.by
2.0 ... 5.5
1.8
6.0
1.6
-40
27
-1.6
INTEGRAL [ INTEGRAL CORP. ]
