UPD780949AGF-3BA datasheet, PDF

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UPD780949AGF-3BA: DescriptionUPD780949AGF-3BA; CategoryThe embedded processor and controller Microcontrollers and processors; File Size33KB，4 Pages; ManufacturerRenesas Electronics Corporation; Websitehttps://www.renesas.com/

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UPD780949AGF-3BA Overview

UPD780949AGF-3BA

UPD780949AGF-3BA Parametric

Parameter Name	Attribute value
Maker	Renesas Electronics Corporation
package instruction	,
Reach Compliance Code	unknown

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78K0 CAN family

Product Letter

Description

µPD78(F)0948/49

8-bit Microcontrollers

The µPD78(F)094x with an on-chip CAN interface is a member of a new branch of NEC’s 78K0

8-bit microcomputer family. Based on 0.35 mm technology, the devices integrate powerful

application-specific peripherals in combination with EEPROM and Flash memory technology.

They offer outstanding perspectives and opportunities for system solutions at an excellent price/

performance ratio. There are now over 120 different devices in NEC’s established and powerful

78K0 8-bit microcomputer family. All new products will be offered as mask ROM and Flash EPROM.

The µPD78(F)094x is suited for dashboard, air conditioning and high-end body controller

applications in the automotive sector. In addition, the device is ideal for applications where CAN

functionality is combined with control-oriented peripherals. In particular, there is full support for

systems connected to an LCD display. Since the LCD output is shared with a general-purpose pin,

non-LCD applications are also covered.

• 60 Kbytes internal mask ROM or Flash EPROM

• 2 Kbytes internal RAM (high speed: 1024 bytes;

LCD display: 40 bytes; expansion: 992 bytes)

• 256 bytes EEPROM optional

• Instructions execution time adjustable from

0.25

µs

at 8 MHz down to RC subsystem clock

• Powerful instruction set

• Bit manipulation in entire address space

• Built-in multiply and divide instructions

• DCAN Interface (2 transmit buffers; up to 16

program receive buffers)

• 4 x 40 segments LCD controller/driver

• 8-channel 8-bit A/D converter, including power

failure detector

• Serial interface (3-wire, 2-wire, UART)

• Timer channels (2 x 16-bit timer, 2 x 8-bit timer/

event counter, watch timer, watch dog timer)

• Sound generator

• External access

• Vectored interrupts (22 internal, 5 external)

• 79 I/O ports

• RC subsystem clock oscillator

• Built-in clock oscillator circuit

• Standby control (HALT, STOP mode)

• Operating supply voltage: 4.0 – 5.5 V

• 100-pin QFP package (14 mm x 20 mm)

Applications

Features

Block Diagram

TI/TO

Two 16-bit Timers

ROM

60 Kbytes

Mask or

Flash

60 Kbytes

CPU

78K0

8-bit

External

Bus Access

DCAN Interface

CRxD

CTxD

CCLK

SGOA

SGO

ASTB

A8-15

EEPROM

256 bytes

(optional)

AD0-7

CL2

CL1

TI/TO

Two 8-bit Timers

RAM

2 Kbytes

Sound Generator

Watch Timer

Watchdog Timer

SCK

SIO

SCK

RxD

TxD

S0-S39

COM0-COM3

VLC0-VLC3

AN0-AN7

REF

40 x 4 LCD

Controller/Driver

3-wire CSI

2-wire CSI

RC Subclock

UART

BRG

Ports

System Control

Standby Control

RESET

PCL

INTP0-4

79 I/O Ports

Interrupt

Control

Clock Output

Control

A/D Converter &

Power Fail Detection

Functional Block Description

CPU

The heart of the 78K0 family is a powerful 8-bit CPU. The 0.35 mm process technology ensures

an excellent power/performance ratio. Four 8-bit register banks can be concatenated to a 16-bit

addressing. The 64-Kbyte linear address space is accessed via 16-bit addresses. Bit

manipulation operations are supported on all registers and the entire RAM address space.

Subclock CPU operation to reduce system power consumption is also supported.

DCAN Module

With its minimized circuit design, NEC’s DCAN module is an ideal solution for providing full

hardware support for most stand-alone CAN communication applications. Transmission is

supported by two independent transmit buffers with easy priority control. With up to 16

mailboxes in the communication RAM, the receive path provides virtually “Full CAN”

performance. The expansion RAM is used as CAN data RAM to the CPU. The number of

mailboxes for transmission and CAN can be configured by setting the DCAN’s SFR registers.

Each message buffer allocates 16 bytes of expansion RAM, resulting in a RAM requirement of

maximum 288 bytes for the DCAN module.

A/D Converter

The converter has 8 channels with 8-bit resolution. One of the channels can be used as a failure

detector that generates an internal interrupt on recognizing an analog input above/below a

certain voltage. The 8-bit conversion time per channel is typically below 18 µs at 8 MHz. The A/D

resistor chain can be switched off to reduce power consumption.

Serial Interface

The serial interface includes one UART (Universal Asynchronous Receiver Transmitter) that

supports transfer rates up to 125 kbps. A dedicated baud rate generator sets the transfer rate. A

3-wire CSI (Clocked Serial Interface) for transfer rates up to 1.25 Mbps is also provided. An I

bus system can be configured using the 2-wire CSI.

Timer

A flexible timer offers a total of 6 timer channels. Two-channel 16-bit timers can be used to

generate a basic time interval, for PWM with compare registers and for precise measurements

with up to three 16-bit capture registers. Two-channel 8-bit timers can be used as interval timers,

for PWM output and as external event counters. The watch timer generates a watch time and

can be used simultaneously as an interval timer. The on-chip watchdog timer monitors the CPU

and generates either an internal reset or a non-maskable interrupt. It can also be used as an

additional interval timer if the watchdog function is not required.

RC Subclock

The subclock is driven by an external RC connected to the CL1/CL2 terminal pair. This is a very

inexpensive method of generating a low frequency for much lower power consumption in

subclock mode.

LCD Driver

The LCD controller/driver can drive up to 160 LCD segments (40 segments, 4 commons).All

LCD segments are shared with ports and can be selected bitwise to ensure maximum port pin

availability if the application does not require all LCD segments.

Sound Generator

The sound generator produces sounds composed of a frequency output and a PWM signal for

volume control. The generated frequency is in the range of 256 Hz to 7.7 kHz. It can be used for

simple alarm sounds, like buzzer, gong and beeper.

External Access

External access can be used to expand memory capacity or to connect external circuits using a

parallel interface.

UPD780949AGF-3BA Related Products

	UPD780949AGF-3BA	UPD78F0948GF-3BA-A	UPD780948GF-3BA	UPD780948AGF-3BA	UPD780949GF-3BA
Description	UPD780949AGF-3BA	UPD78F0948GF-3BA-A	UPD780948GF-3BA	UPD780948AGF-3BA	UPD780949GF-3BA
Reach Compliance Code	unknown	unknown	unknown	unknown	unknown
Maker	Renesas Electronics Corporation	-	Renesas Electronics Corporation	Renesas Electronics Corporation	Renesas Electronics Corporation

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