M38039G8HKP datasheet(69/92 Pages) RENESAS

69 / 92 page

Rev.1.10

Nov 14, 2005

Page 69 of 91

REJ03B0166-0110

3803 Group (Spec.H QzROM version)

PRELIMINARY

Notice: This is not a final specification.

Some parametric limits are subject to change.

NOTES ON USAGE

Termination of Unused Pins.

Be sure to perform the termination of unused pins.

Handling of Power Source Pins

In order to avoid a latch-up occurrence, connect a capacitor

suitable for high frequencies as bypass capacitor between power

source pin (VCC pin) and GND pin (VSS pin), and between power

source pin (VCC pin) and analog power source input pin (AVSS

pin). Besides, connect the capacitor to as close as possible. For

bypass capacitor which should not be located too far from the

pins to be connected, a ceramic capacitor of 0.01

µF−0.1 µF is

recommended.

Power Source Voltage

When the power source voltage value of a microcomputer is less

than the value which is indicated as the recommended operating

conditions, the microcomputer does not operate normally and

may perform unstable operation.

In a system where the power source voltage drops slowly when

the power source voltage drops or the power supply is turned off,

reset a microcomputer when the power source voltage is less

than the recommended operating conditions and design a system

not to cause errors to the system by this unstable operation.

Electric Characteristic Differences Between Flash

Memory, Mask ROM and QzROM Version MCUs

There are differences in the manufacturing processes and the

mask pattern among flash memory, mask ROM, and QzROM

version MCUs due to the differences of the ROM type. Even

when the ROM type is the same, when the memory size is

different, the manufacturing processes and the mask pattern

differ. For these reasons, the oscillation circuit constants and the

characteristics such as a characteristic value, operation margin,

noise immunity, and noise radiation within the limits of electrical

characteristics may differ.

When manufacturing an application system, please perform

sufficient evaluations in each product. Especially, when

switching a product (example: change from the mask ROM

version to QzROM version), please perform sufficient

evaluations by the switching product in the stage before mass-

producing an application system.

Product Shipped in Blank

As for the product shipped in blank, Renesas does not perform

the writing test to user ROM area after the assembly process

though the QzROM writing test is performed enough before the

assembly process. Therefore, a writing error of approx.0.1 %

may occur. Moreover, please note the contact of cables and

foreign bodies on a socket, etc. because a writing environment

may cause some writing errors.

QzROM Version

Connect the CNVSS/VPP pin the shortest possible to the GND

pattern which is supplied to the VSS pin of the microcomputer.

In addition connecting an approximately 5 k

Ω resistor in series to

the GND could improve noise immunity. In this case as well as

the above mention, connect the pin the shortest possible to the

GND pattern which is supplied to the V SS pin o f the

microcomputer.

•Reason

The CNVSS/VPP pin is the power source input pin for the built-in

QzROM. When programming in the QzROM, the impedance of

the VPP pin is low to allow the electric current for writing to flow

into the built-in QzROM. Because of this, noise can enter easily.

If noise enters the VPP pin, abnormal instruction codes or data

are read from the QzROM, which may cause a program runaway.

Fig 63. Wiring for the CNVSS/VPP

Notes On QzROM Writing Orders

When ordering the QzROM product shipped after writing,

submit the mask file (extension: .msk) which is made by the

mask file converter MM.

Be sure to set the ROM option (“MASK option” written in the

mask file converter) setup when making the mask file by using

the mask file converter MM.

Notes On ROM Code Protect

(QzROM product shipped after writing)

As for the QzROM product shipped after writing, the ROM code

protect is specified according to the ROM option setup data in

the mask file which is submitted at ordering.

Renesas Technology corp. uses the ROM option setup data at the

ROM code protect address (address FFDB16) when writing to the

QzROM. Consequently, the actual written value might differ

from the ordered value as the contents of the ROM code protect

address.

The ROM option setup data in the mask file is “0016” for protect

enabled, “FE16” (protect enabled to the protect area 1 only) or

“FF16” for protect disabled. Therefore, the contents of the ROM

code protect address of the QzROM product shipped after

writing are “0016”, “FE16” or “FF16”.

Note that the mask file which has nothing at the ROM option

data or has the data other than “0016”, “FE16” and “FF16” can not

be accepted.

DATA REQUIRED FOR QzROM WRITING ORDERS

The following are necessary when ordering a QzROM product

shipped after writing:

1. QzROM Writing Confirmation Form*

2. Mark Specification Form*

3. ROM data...........Mask file

* For the QzROM writing confirmation form and the mark

specification form, refer to the “Renesas Technology Corp.”

Homepage (http://www.renesas.com/homepage.jsp).

Note that we cannot deal with special font marking (customer's

trademark etc.) in QzROM microcomputer.

The shortest

CNVSS/VPP

VSS

Approx. 5k

Ω

The shortest

(Note)

Note. Shows the microcomputer’s pin.

M38039G8HKP Datasheet(PDF) 69 Page - Renesas Technology Corp

M38039G8HKP Datasheet(HTML) 69 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92

Datasheet Descarga

Enlace URL