REJ09B0257-0500
16
H8S/2646
Group
, H8S/2646R F-ZTAT,
H8S/2648R F-ZTAT
Hardware Manual
Renesas 16-Bit Single-Chip Microcomputer
H8S Family/H8S/2600 Series
H8S/2646
H8S/2645
H8S/2647
H8S/2648
H8S/2646R
H8S/2648R
HD6432646
HD6432645
HD6432647
HD6432648
HD64F2646R
HD64F2648R
Rev. 5.00
Revision Date: Sep 22, 2005
Keep safety first in your circuit designs!
1. Renesas Technology Corp. puts the maximum effort into making semiconductor products better and
more reliable, but there is always the possibility that trouble may occur with them. Trouble with
semiconductors may lead to personal injury, fire or property damage.
Remember to give due consideration to safety when making your circuit designs, with appropriate
measures such as (i) placement of substitutive, auxiliary circuits, (ii) use of nonflammable material or
(iii) prevention against any malfunction or mishap.
Notes regarding these materials
1. These materials are intended as a reference to assist our customers in the selection of the Renesas
Technology Corp. product best suited to the customer's application; they do not convey any license
under any intellectual property rights, or any other rights, belonging to Renesas Technology Corp. or
a third party.
2. Renesas Technology Corp. assumes no responsibility for any damage, or infringement of any third-
party's rights, originating in the use of any product data, diagrams, charts, programs, algorithms, or
circuit application examples contained in these materials.
3. All information contained in these materials, including product data, diagrams, charts, programs and
algorithms represents information on products at the time of publication of these materials, and are
subject to change by Renesas Technology Corp. without notice due to product improvements or
other reasons. It is therefore recommended that customers contact Renesas Technology Corp. or
an authorized Renesas Technology Corp. product distributor for the latest product information
before purchasing a product listed herein.
The information described here may contain technical inaccuracies or typographical errors.
Renesas Technology Corp. assumes no responsibility for any damage, liability, or other loss rising
from these inaccuracies or errors.
Please also pay attention to information published by Renesas Technology Corp. by various means,
including the Renesas Technology Corp. Semiconductor home page (http://www.renesas.com).
4. When using any or all of the information contained in these materials, including product data,
diagrams, charts, programs, and algorithms, please be sure to evaluate all information as a total
system before making a final decision on the applicability of the information and products. Renesas
Technology Corp. assumes no responsibility for any damage, liability or other loss resulting from the
information contained herein.
5. Renesas Technology Corp. semiconductors are not designed or manufactured for use in a device or
system that is used under circumstances in which human life is potentially at stake. Please contact
Renesas Technology Corp. or an authorized Renesas Technology Corp. product distributor when
considering the use of a product contained herein for any specific purposes, such as apparatus or
systems for transportation, vehicular, medical, aerospace, nuclear, or undersea repeater use.
6. The prior written approval of Renesas Technology Corp. is necessary to reprint or reproduce in
whole or in part these materials.
7. If these products or technologies are subject to the Japanese export control restrictions, they must
be exported under a license from the Japanese government and cannot be imported into a country
other than the approved destination.
Any diversion or reexport contrary to the export control laws and regulations of Japan and/or the
country of destination is prohibited.
8. Please contact Renesas Technology Corp. for further details on these materials or the products
contained therein.
Rev. 5.00 Sep 22, 2005 page ii of xxvi
General Precautions on the Handling of Products
1. Treatment of NC Pins
Note: Do not connect anything to the NC pins.
The NC (not connected) pins are either not connected to any of the internal circuitry or are
used as test pins or to reduce noise. If something is connected to the NC pins, the
operation of the LSI is not guaranteed.
2. Treatment of Unused Input Pins
Note: Fix all unused input pins to high or low level.
Generally, the input pins of CMOS products are high-impedance input pins. If unused pins
are in their open states, intermediate levels are induced by noise in the vicinity, a pass-
through current flows internally, and a malfunction may occur.
3. Processing before Initialization
Note: When power is first supplied, the product’s state is undefined. The states of internal
circuits are undefined until full power is supplied throughout the chip and a low level is
input on the reset pin. During the period where the states are undefined, the register
settings and the output state of each pin are also undefined. Design your system so that it
does not malfunction because of processing while it is in this undefined state. For those
products which have a reset function, reset the LSI immediately after the power supply has
been turned on.
4. Prohibition of Access to Undefined or Reserved Address
Note: Access to undefined or reserved addresses is prohibited.
The undefined or reserved addresses may be used to expand functions, or test registers
may have been be allocated to these address. Do not access these registers: the system’s
operation is not guaranteed if they are accessed.
Rev. 5.00 Sep 22, 2005 page iii of xxvi
Rev. 5.00 Sep 22, 2005 page iv of xxvi
Preface
The H8S/2646 Group is a series of high-performance microcontrollers with a 32-bit H8S/2600
CPU core, and a set of on-chip supporting functions required for system configuration.
This LSI is equipped with a 16-bit timer pulse unit (TPU), programmable pulse generator (PPG),
watchdog timer (WDT), serial communication interface (SCI), A/D converter, motor control
PWM timer (PWM), LCD controller/driver (LCDC), and I/O ports as on-chip supporting modules.
In addition, data transfer controller (DTC) is provided, enabling high-speed data transfer without
CPU intervention. This LSI is suitable for use as an embedded processor for high-level control
systems. Its on-chip ROM are flash memory (F-ZTAT™*) that provides flexibility as it can be
reprogrammed in no time to cope with all situations from the early stages of mass production to
full-scale mass production. This is particularly applicable to application devices with
specifications that will most probably change.
Note: * F-ZTAT is a trademark of Renesas Technology Corp.
Target Users: This manual was written for users who will be using the H8S/2646 Group in the
design of application systems. Members of this audience are expected to understand
the fundamentals of electrical circuits, logical circuits, and microcomputers.
Objective:
This manual was written to explain the hardware functions and electrical
characteristics of the H8S/2646 Group to the above audience. Refer to the
H8S/2600 Series, H8S/2000 Series Programming Manual for a detailed description
of the instruction set.
Notes on reading this manual:
•
In order to understand the overall functions of the chip
Read the manual according to the contents. This manual can be roughly categorized into parts
on the CPU, system control functions, peripheral functions and electrical characteristics.
•
In order to understand the details of the CPU's functions
Read the H8S/2600 Series, H8S/2000 Series Programming Manual.
•
In order to understand the details of a register when its name is known
The addresses, bits, and initial values of the registers are summarized in appendix B, Internal
I/O Register.
Example: Bit order: The MSB is on the left and the LSB is on the right.
Related Manuals:
The latest versions of all related manuals are available from our web site.
Please ensure you have the latest versions of all documents you require.
http://www.renesas.com/eng/
Rev. 5.00 Sep 22, 2005 page v of xxvi
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