Table 1-1 Features (cont)
Item
Description
Memory
Large on-chip memory
•
•
•
•
•
•
H8/3882 and H8/3842: 16-kbyte ROM, 1-kbyte RAM
H8/3883 and H8/3843: 24-kbyte ROM, 1-kbyte RAM
H8/3884 and H8/3844: 32-kbyte ROM, 2-kbyte RAM
H8/3885 and H8/3845: 40-kbyte ROM, 2-kbyte RAM
H8/3886 and H8/3846: 48-kbyte ROM, 2-kbyte RAM
H8/3887 and H8/3847: 60-kbyte ROM, 2-kbyte RAM
I/O ports
Timers
84 pins
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•
71 I/O pins
13 input pins
Six on-chip timers
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Timer A: 8-bit timer
Count-up timer with selection of eight internal clock signals divided from the
system clock (ø)* and four clock signals divided from the watch clock (øw)*
•
Asynchronous event counter: 16-bit timer
Count-up timer able to count asynchronous external events independently
of the MCU's internal clocks
•
•
Timer C: 8-bit timer
Count-up/down timer with selection of seven internal clock signals or event
input from external pin
Auto-reloading
Timer F: 16-bit timer
Can be used as two independent 8-bit timers
Count-up timer with selection of four internal clock signals or event input
from external pin
Provision for toggle output by means of compare-match function
Timer G: 8-bit timer
•
•
Count-up timer with selection of four internal clock signals
Incorporates input capture function (built-in noise canceler)
Watchdog timer
Reset signal generated by overflow of 8-bit counter
Note:
*
See section 4, Clock Pulse Generator, for the definition of ø and øw.
3
ETC [ ETC ]
