LC863448B/40B/32B/28B/24B/20B/16B
No.7935-3/17
■
AD converter
4 channels × 6-bit AD converters
■
Serial interfaces
IIC-bus compliant serial interface (Multi-master type)
Consists of a single built-in circuit with two I/O channels. The two data lines and two clock lines can be connected
internally.
■
PWM output
3 channels × 7-bit PWM
■
Timer
Timer 0 : 16-bit timer/counter
With 2-bit prescaler + 8-bit programmable prescaler
Mode 0 : Two 8-bit timers with a programmable prescaler
Mode 1 : 8-bit timer with a programmable prescaler + 8-bit counter
Mode 2 : 16-bit timer with a programmable prescaler
Mode 3 : 16-bit counter
The resolution of timer is 1 tCYC.
Base timer
Generate every 500ms overflow for a clock application
(using 32.768kHz crystal oscillation for the base timer clock)
Generate every 976
μ
s, 3.9ms, 15.6ms, 62.5ms overflow
(using 32.768kHz crystal oscillation for the base timer clock)
Clock for the base timer is selectable from 32.768kHz crystal oscillation, system clock or programmable prescaler
output of Timer 0
■
Remote control receiver circuit (connected to the P73/INT3/T0IN terminal)
Noise rejection function
Polarity switching
■
Watchdog timer
External RC circuit is required
Interrupt or system reset is activated when the timer overflows
■
ROM correction function
Max 128-bytes/2 addresses
■
Interrupts
12 sources 8 vectored interrupts
1. External Interrupt INT0
2. External Interrupt INT1
3. External Interrupt INT2, Timer/counter T0L (Lower 8-bits)
4. External Interrupt INT3, base timer
5. Timer/counter T0H (Upper 8-bits)
6. Data slicer
7. Vertical synchronous signal interrupt (VS), horizontal line (HS)
8. IIC, Software
Interrupt priority control
Three interrupt priorities are supported (low, high and highest) and multi-level nesting is possible.
Low or high priority can be assigned to the interrupts from 3 to 8 listed above.
For the external interrupt INT0 and INT1, low or highest priority can be set.