Datasheet

Rev. 6.00 Mar. 18, 2010 Page vi of lx
REJ09B0054-0600
List of On-Chip Peripheral Functions:
Group Name
H8S/2258
Group
H8S/2239
Group
H8S/2238
Group
H8S/2237
Group
H8S/2227
Group
Microcomputer
H8S/2258
H8S/2256 H8S/2239
H8S/2238B
H8S/2238R
H8S/2236B
H8S/2236R
H8S/2237
H8S/2235
H8S/2233
H8S/2227
H8S/2225
H8S/2224
H8S/2223
Bus controller (BSC) O (16 bits) O (16 bits) O (16 bits) O (16bits) O (16 bits)
Data transfer controller
(DTC)
O O O O O
DMA controller (DMAC) ⎯ O ⎯ ⎯ ⎯
PC break controller (PBC) ×2 ×2 ×2 ×2 ×2
16-bit timer pulse unit
(TPU)
×6 ×6 ×6 ×6 ×3
8-bit timer (TMR) ×4 ×4 ×4 ×2 ×2
Watchdog timer (WDT) ×2 ×2 ×2 ×2 ×2
Serial communication
interface (SCI)
×4 ×4 ×4 ×4 ×3
I
2
C bus interface (IIC) ×2 (option) ×2 (option) ×2 (option) ⎯ ⎯
D/A converter ×2 ×2 ×2 ×2 ⎯
A/D
converter
Analog input ×8 ×8 ×8 ×8 ×8
IEBus™* controller (IEB) ×1 ⎯ ⎯ ⎯ ⎯
Note: * IEBus (Inter Equipment Bus) is a trademark of NEC Electronics Corp.
Target Users: This manual was written for users who will be using the H8S/2258 Group,
H8S/2239 Group, H8S/2238 Group, H8S/2237 Group, and H8S/2227 Group in the
design of application systems. Target users are expected to understand the
fundamentals of electrical circuits, logical circuits, and microcomputers.
Objective: This manual was written to explain the H8S/2258 Group, H8S/2239 Group,
H8S/2238 Group, H8S/2237 Group, and H8S/2227 Group hardware functions and
electrical characteristics of this LSI to the target users.
Refer to the H8S/2600 Series, H8S/2000 Series Software Manual for a detailed
description of the instruction set.