
5
1.2 Models Available for MB89930A Series
Note:
The oscillation should be 10 MHz unless another condition such as the main clock maximum
speed, the clock cycle value, or conversion time is stated.
Peripheral
function
Port
General-purpose I/O port: 21 pins (Also serve as peripherals. 4
of which can be used as N-ch open-drain I/O ports.)
21-bit timebase timer
21 bits
Interrupt cycle: When the main clock is at 10 MHz (0.82 ms, 3.3
ms, 26.2 ms, or 419.4 ms)
Watchdog timer
Reset occurrence cycle: When the main clock is at 10 MHz
(419.4 ms at minimum)
8-bit PWM timer
8-bit interval timer operation (Square wave output is supported.
Operating clock cycle: 0.4
s, 3.2 s, 6.4 s, or 25.6 s)
8-bit resolution PWM operation (Conversion cycle: 102.4
s to
26.84 ms)
8/16 bit timer/counter output is selectable for the count clock.
8/16-bit capture timer/
counter
8-bit capture timer/counter x 1 channel + 8-bit timer or 16-bit
capture timer/counter x 1 channel
When timer 0 or a 16-bit counter is operating, event-counting
operation by external clock input and square wave output are
supported.
UART
Transfer data length: 6, 7, or 8 bits
8-bit serial I/O
8 bits length, LSB first/MSB first selectability
Transfer clock (either external or any of 0.8
s, 6.4 s, or 25.6 s)
12-bit PPG timer
Output frequency: Pulse width and cycle are selectable.
External interrupt 1
(wake-up)
3 channels (interrupt vector, request flag, and request output
enable)
Edge selectability (selectable from leading edge, trailing edge,
and both-edge modes)
Also available for cancellation from stop or sleep (Edge detection
is also available in stop mode.)
External interrupt 2
(wake-up)
8 inputs 1 channel (L level interrupt and input enable are
independent.)
Also available for cancellation from stop or sleep (Level detection
is also available in stop mode.)
10-bit A/D converter
10-bit resolution x 8 channels
A/D convert function (Conversion time: 15.2
s/10 MHz)
Continuous activation by 8/16-bit timer/counter output or timebase
timer output
Table 1.2-2 CPU and Peripheral Functions of MB89930A Series (Continued)
Item
Specification