Revised 08/03
12
TECHNICAL INFORMATION FOR FIC03272
6. Hardware Specifications
6-1 Features
*4-bit single chip microcomputer
*Instruction execution time: 1.0µs (at 8MHz)
*Low voltage operation: 2.2V (at 4.2MHz)
*Basic instructions: 92
- ROM table look-up instructions
- 5-bit to 8-bit data conversion instruction
*Subroutine nesting: 15 levels maximum
*6 interrupt sources (External: 2, Internal: 4)
- All sources each have independent latches, and
multiple interrupt control is available
*I/O port (23 pins)
*Two 12-bit Timer/Counters
- Timer, event counter, and pulse width measure-
ment mode
*Interval Timer
*Emulation pod: BM47C443
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*8-bit successive approximate type A/D converter
with sample and hold
- 8 analog inputs
- Conversion time: 24µs (at 8MHz)
*Serial Interface with 8-bit buffer
- Simultaneous transmission and reception
capability
- 8/4-bit transfer, external/internal clock, and
leading/trailing edge shift mode
*Zero-cross detector (and external interrupt handler)
*Pulse output
- Buzzer drive/Remocon carrier
*High current outputs
- LED direct drive capacity: typ. 20mA x 8 bits
(Ports R5, R6)
*Reset function
- Watchdog timer reset
*Hold function
- Battery/Capacitor back-up
6-2 DC characteristics (see Table 8)
Table 8 - DC characteristics
(Vss = 0, Topr = -30~+70°C)