16
RL78/F13, F14
User’s Manual: Hardware
16-Bit Single-Chip Microcontrollers
All information contained in these materials, including products and product specifications,
represents information on the product at the time of publication and is subject to change by
Renesas Electronics Corp. without notice. Please review the latest information published by
Renesas Electronics Corp. through various means, including the Renesas Electronics Corp.
website (http://www.renesas.com).
www.renesas.com
Rev.2.00 May 2014
Notice
1.
Descriptions of circuits, software and other related information in this document are provided only to illustrate the operation of
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(2012.4)
NOTES FOR CMOS DEVICES
(1) VOLTAGE APPLICATION WAVEFORM AT INPUT PIN: Waveform distortion due to input noise or a reflected
wave may cause malfunction. If the input of the CMOS device stays in the area between VIL (MAX) and VIH
(MIN) due to noise, etc., the device may malfunction. Take care to prevent chattering noise from entering the
device when the input level is fixed, and also in the transition period when the input level passes through the
area between VIL (MAX) and VIH (MIN).
(2) HANDLING OF UNUSED INPUT PINS: Unconnected CMOS device inputs can be cause of malfunction. If an
input pin is unconnected, it is possible that an internal input level may be generated due to noise, etc., causing
malfunction. CMOS devices behave differently than Bipolar or NMOS devices. Input levels of CMOS devices
must be fixed high or low by using pull-up or pull-down circuitry. Each unused pin should be connected to VDD
or GND via a resistor if there is a possibility that it will be an output pin. All handling related to unused pins must
be judged separately for each device and according to related specifications governing the device.
(3) PRECAUTION AGAINST ESD: A strong electric field, when exposed to a MOS device, can cause destruction of
the gate oxide and ultimately degrade the device operation. Steps must be taken to stop generation of static
electricity as much as possible, and quickly dissipate it when it has occurred. Environmental control must be
adequate. When it is dry, a humidifier should be used. It is recommended to avoid using insulators that easily
build up static electricity. Semiconductor devices must be stored and transported in an anti-static container,
static shielding bag or conductive material. All test and measurement tools including work benches and floors
should be grounded. The operator should be grounded using a wrist strap. Semiconductor devices must not be
touched with bare hands. Similar precautions need to be taken for PW boards with mounted semiconductor
devices.
(4) STATUS BEFORE INITIALIZATION: Power-on does not necessarily define the initial status of a MOS device.
Immediately after the power source is turned ON, devices with reset functions have not yet been initialized.
Hence, power-on does not guarantee output pin levels, I/O settings or contents of registers. A device is not
initialized until the reset signal is received. A reset operation must be executed immediately after power-on for
devices with reset functions.
(5) POWER ON/OFF SEQUENCE: In the case of a device that uses different power supplies for the internal
operation and external interface, as a rule, switch on the external power supply after switching on the internal
power supply. When switching the power supply off, as a rule, switch off the external power supply and then the
internal power supply. Use of the reverse power on/off sequences may result in the application of an
overvoltage to the internal elements of the device, causing malfunction and degradation of internal elements
due to the passage of an abnormal current. The correct power on/off sequence must be judged separately for
each device and according to related specifications governing the device.
(6) INPUT OF SIGNAL DURING POWER OFF STATE : Do not input signals or an I/O pull-up power supply while
the device is not powered. The current injection that results from input of such a signal or I/O pull-up power
supply may cause malfunction and the abnormal current that passes in the device at this time may cause
degradation of internal elements. Input of signals during the power off state must be judged separately for each
device and according to related specifications governing the device.
How to Use This Manual
Readers
This manual is intended for user engineers who wish to understand the functions of the
RL78/F13, F14 and design and develop application systems and programs for these
devices.
Purpose
This manual is intended to give users an understanding of the functions described in the
Organization
below.
Organization
The RL78/F13, F14 manual is separated into two parts: this manual and the software
edition (common to the RL78 family).
RL78/F13, F14
User’s Manual
Hardware
RL78 family
User’s Manual
Software
•
Pin functions
•
Internal block functions
•
Interrupts
•
Other on-chip peripheral functions
•
Electrical specifications
How to Read This Manual
•
CPU functions
•
Instruction set
•
Explanation of each instruction
It is assumed that the readers of this manual have general knowledge of electrical
engineering, logic circuits, and microcontrollers.
•
To gain a general understanding of functions:
→
Read this manual in the order of the
CONTENTS.
•
How to interpret the register format:
→
For a bit number enclosed in angle brackets, the bit name is defined as a reserved
word in the assembler, and is defined as an sfr variable using the #pragma sfr
directive in the compiler.
•
To know details of the RL78/F13, F14 Microcontroller instructions:
→
Refer to the separate document
RL78 Family User’s Manual: Software
(R01US0015E).
Conventions
Data significance:
Note:
Caution:
Remark:
Higher digits on the left and lower digits on the right
Footnote for item marked with
Note
in the text
Information requiring particular attention
Active low representations:
×××
(overscore over pin and signal name)
Supplementary information
...
××××
or
××××B
Numerical representations: Binary
...
××××
Decimal
Hexadecimal
...
××××H
Related Documents
The related documents indicated in this publication may include preliminary versions.
However, preliminary versions are not marked as such.
Documents Related to Devices
Document Name
RL78/F13, F14 User’s Manual: Hardware
RL78 Family User’s Manual: Software
Document No.
R01UH0368E
R01US0015E
Documents Related to Flash Memory Programming
Document Name
PG-FP5 Flash Memory Programmer User’s Manual
Document No.
R20UT0008E
Caution The related documents listed above are subject to change without notice. Be sure to use the latest
version of each document when designing.
