Hitachi H8/3664 Hardware Manual page 18

Item
Memory
I/O ports
Timers
Serial
communication
interface
2
Description
Type No.
HD64F3664 (Flash memory version)
HD6433664 (Mask ROM version)
HD6433663 (Mask ROM version)
HD6433662 (Mask ROM version)
HD6433661 (Mask ROM version)
HD6433660 (Mask ROM version)
•
29 I/O pins, including 8 large current ports (I
•
8 input pins (also used for analog input)
•
Timer A: 8-bit timer
Count-up timer with selection of eight internal clock signals divided from the
system clock and four clock signals divided from the watch sub-clock
•
Timer V: 8-bit timer
 Count-up timer with selection of six internal clock signals or event input
from external pin
 Compare-match waveform output
 Externally triggerable
•
Timer W: 16-bit timer
 Counts any of four internal clock signals or external events
 Maximum of four types of pulses can be input or output and processed
 Output compare/input capture (4 output pins)
 Output compare/input capture operation can be buffered
 PWM mode can be set (maximum of three synchronous outputs)
•
Watchdog timer: 8-bit timer
 Reset signal generated by counter overflow
 Operates independent from system clock by internal oscillation circuit
•
Selectable between asynchronous mode or 8-bit clock synchronous mode
•
Incorporate baud rate generator
•
Multi-processor communication function (asynchronous)
ROM RAM
32 kbytes 2,048 bytes
32 kbytes 1,024 bytes
24 kbytes 1,024 bytes
16 kbytes 512 bytes
12 kbytes 512 bytes
8 kbytes 512 bytes
= 20 mA, @ V
OL
= 1.5 V
OL