Datasheet

Section 1 Overview

Rev. 4.00 Sep 27, 2006 page 5 of 1130

REJ09B0327-0400

Item Specifications

D/A converter

• Resolution: 8 bits

• Output: 2 channels

I/O ports

• 74 input/output pins (including 24 with LED drive capability)

• 8 input-only pins

• VCCB (separate power supply) drive pins among I/O pins (H8S/2148

Group and H8S/2147N)

Memory

• Flash memory or mask ROM

• High-speed static RAM

Product Name ROM RAM

H8S/2144, H8S/2148 128 kbytes 4 kbytes

H8S/2143 96 kbytes 4 kbytes

H8S/2142, H8S/2147,

H8S/2147N

64 kbytes 2 kbytes

Interrupt controller

• Nine external interrupt pins (NMI, IRQ0 to IRQ7)

• 44 internal interrupt sources

• Three priority levels settable

Power-down state

• Medium-speed mode

• Sleep mode

• Module stop mode

• Software standby mode

• Hardware standby mode

• Subclock operation

Clock pulse generator

• Built-in duty correction circuit

Packages

• 100-pin plastic QFP (FP-100B)

• 100-pin plastic TQFP (TFP-100B)

C bus interface

(IIC: 2 channels)

(option in H8S/2148

Group and

H8S/2147N)

• Conforms to Philips I

C bus interface standard

• Single master mode/slave mode

• Arbitration lost condition can be identified

• Supports two slave addresses