3
Table 1.1
Features (cont)
Item
Description
Memory
Large on-chip memory
•
H8/3637: 60-kbyte ROM, 2-kbyte RAM
•
H8/3636: 48-kbyte ROM, 2-kbyte RAM
•
H8/3635: 40-kbyte ROM, 2-kbyte RAM
I/O ports
66 I/O ports
•
I/O pins: 61
•
Input pins: 5
Timers
Five on-chip timers
•
Timer A: 8-bit timer with built-in interval/watch clock time base function
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 (ø
w
)
*
•
Timer F: 16-bit timer with built-in output compare function
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
Compare-match function with toggle output
•
Timer G: 8-bit timer with built-in input capture/interval functions
Count-up timer with selection of four internal clock signals
Input capture function with built-in noise canceller circuit
•
Timer Y: 16-bit timer with built-in interval/auto-reload functions
Count-up timer with selection of seven internal clocks or event input
from external pin
Auto-reload function
•
Watchdog timer
Reset signal generated on 8-bit timer overflow
Serial
communication
interface
Two serial communication interface channels on chip
•
SCI1: synchronous serial interface
Choice of 8-bit or 16-bit data transfer
•
SCI3: 8-bit synchronous or asynchronous serial interface
Built-in function for multiprocessor communication
Note:
*
ø and ø
w
are defined in section 4, Clock Pulse Generators.