
3
MB89480/480L Series
MB89485L
MB89485
MB89P485L
MB89P485
MB89PV480
CPU functions
Number of instructions:
: 136
Instruction bit length:
: 8 bits
Instruction length:
: 1 to 3 bytes
Data bit length:
: 1, 8, 16 bits
Minimum execution time:
: 0.32
s/12.5 MHz
Minimum interrupt processing time:
: 2.88
s/12.5 MHz
Ports
I/O ports (CMOS)
: 11 pins
N-channel open drain I/O ports
: 28 pins
Output ports (N-channel open drain)
: 2 pins
Input port
: 1 pin
Total
: 42 pins
21-Bit Time-based
timer
Interrupt period (0.66ms, 2.6 ms, 21.0 ms, 335.5 ms) at 12.5 MHz
Watchdog timer
Reset period (167.8 ms to 335.5 ms) at 12.5 MHz
Pulse width count
timer
2 channels
8-bit one-shot timer operation (supports underflow output, operating clock period: 1, 4, 32 tinst,
external)
8-bit reload timer operation (supports square wave output, operating clock period: 1, 4, 32 tinst,
external)
8-bit pulse width measurement operation (supports continuous measurement, H width, L width,
rising edge to rising edge, falling edge to falling edge measurement and both edge
measurement)
PWM timer
8-bit reload timer operation (supports square wave output, operating clock period: 1, 4, 32 tinst,
external)
8-bit resolution PWM operation
6- Bit programmable
pulse generator
Can generate square pulse with programmable period.
8/16-Bit timer/
counter 11,12
Can be operated either as a 2-channel 8-bit timer/counter (Timer 11 and Timer 12, each with its
own independent operating clock cycle), or as one 16-bit timer/counter
In Timer 11 or 16-bit timer/counter operation, event counter operation (external clock-triggered)
and square wave output capable
8/16-Bit timer/
counter 21,22
Can be operated either as a 2-channel 8-bit timer/counter (Timer 21 and Timer 22, each with its
own independent operating clock cycle), or as one 16-bit timer/counter
In Timer 21 or 16-bit timer/counter operation, event counter operation (external clock-triggered)
and square wave output capable
External interrupt
4 independent channels (selectable edge, interrupt vector, request flag)
8 channels (low level interrupt)
A/D converter
10-bit resolution
× 4 channels
A/D conversion function (conversion time: 60 tinst )
Supports repeated activation by internal clock.
LCD controller/driver
Common output:
4 (max.)
Segment output:
31 (max.) (selected resistor ladder)
26 (max.) (selected booster)
Bias power supply pins:
4
LCD display RAM size:
31
× 4 bits
Dividing resistor/booster:
selected by mask option
UART/SIO
Synchronous/asynchronous data transfer capable
(Max. baud rate: 97.656 Kbps at 12.5 MHz)
(7 and 8 bits with parity bit ; 8 and 9 bits without parity bit)
Buzzer output
7 frequency types are selectable by software.
Part number
Parameter