Renesas F-ZTAT H8 Series Hardware Manual page 30

1. Overview
Item
Serial communication
interface
14-bit PWM
(in H8/3857 Group only)
A/D converter
LCD controller
Rev.3.00 Jul. 19, 2007 page 4 of 532
REJ09B0397-0300
Description
H8/3857 Group: Two 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
H8/3854 Group: One channel on chip
•
SCI3: 8-bit synchronous or asynchronous serial interface
Built-in function for multiprocessor communication
Pulse-division PWM output for reduced ripple
•
Can be used as a 14-bit D/A converter by connecting to an external
low-pass filter.
H8/3857 Group
•
Successive approximations using a resistance ladder resolution:
8 bits
•
8-channel analog input port
•
Conversion time: 31/φ or 62/φ per channel
H8/3854 Group
•
Successive approximations using a resistance ladder resolution:
8 bits
•
4-channel analog input port
•
Conversion time: 31/φ or 62/φ per channel
H8/3857 Group: Up to 64 segment pins and 32 common pins
•
Choice of three duty cycles (1/8, 1/16, 1/32)
With 1/8 duty selected:
With 1/16 duty selected: 56 SEG × 16 COM, 40 SEG × 16 COM
With 1/32 duty selected: 40 SEG × 32 COM
•
Built-in 2048-bit display data RAM
•
Built-in 2× or 3× LCD step-up circuit
•
Built-in contrast control circuit
•
Built-in LCD power supply bleeder resistance and voltage follower op-
amp circuits
H8/3854 Group: 40 segment pins and up to 16 common pins
•
Choice of two duty cycles (1/8, 1/16)
With 1/8 duty selected:
With 1/16 duty selected: 40 SEG × 16 COM
•
Built-in 640-bit display data RAM
•
Built-in LCD power supply bleeder resistance
64 SEG × 8 COM, 40 SEG × 8 COM
40 SEG × 8 COM