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UPD17068 Datasheet(PDF) 1 Page - NEC

Part No. UPD17068
Description  4-BIT SINGLE-CHIP MICROCONTROLLER CONTAINING IMAGE DISPLAY CONTROLLER AND PLL FREQUENCY SYNTHESIZER FOR DIGITAL TUNING SYSTEMS
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Maker  NEC [NEC]
Homepage  http://www.nec.com/
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UPD17068 Datasheet(HTML) 1 Page - NEC

 
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The
µPD17068 is a 4-bit single-chip microcontroller for digital tuning systems. It contains an image display
controller (IDC) that supports many types of display, and a PLL synthesizer.
The CPU of the
µPD17068 is capable of 4-bit parallel addition, logical operations, bit tests, setting/resetting
of a carry flag, and supports a powerful interrupt function and timer function.
The image display controller for on-screen display is user-programmable, allowing a range of displays to
be programmed.
The peripheral hardware includes a full complement of I/O ports, controlled with powerful I/O instructions,
as well as a serial interface, a 6-bit A/D converter, and an 8-bit D/A converter (PWM output).
FEATURES
Program memory (ROM)
:
24K bytes (12032
× 16 bits)
Character ROM (CROM)
:
4086
× 24 bits (255 characters)
Data memory (RAM)
:
1007
× 4 bits
Video RAM (VRAM)
:
672
× 4 bits (can be used for data memory)
Address stack
:
12 levels
Interrupt stack
:
2 levels
Instruction execution time :
2
µs (when an 8 MHz crystal is used)
PLL frequency synthesizer
8-bit serial interface
(2 channels: One for two-wire or three-wire mode, compatible with I2C bus, and one for three-wire mode only)
D/A converter: 8 bits
× 9 lines (PWM output)
A/D converter: 6 bits
× 8 lines
Horizontal synchronizing signal counter
Commercial power supply frequency counter
Power-failure detection circuit and power-on reset circuit
Interrupt input for remote-controller signal (with noise canceler)
User-programmable image display controller (IDC)
Displayed characters : Up to 192 per screen (more characters can be displayed when the use of the entire
screen is specified with a program)
Display mode
: 16
× 16 dots in 15 lines × 24 columns
14
× 16 dots in 17 lines × 24 columns
Character patterns
: 255
Character format
: 16
× 16 dots or 14 × 16 dots
Colors
: 15
Character sizes
: 16 sizes for height (can be specified per line)
24 sizes for width (can be specified per character)
Many I/O ports
I/O
: 19 ports
Input only
:
4 ports
Output only
: 21 ports
Operating supply voltage: 5 V
±10 %
Low power dissipation by use of CMOS technology
The information in this document is subject to change without notice.
DATA SHEET
MOS INTEGRATED CIRCUIT
µPD17068
4-BIT SINGLE-CHIP MICROCONTROLLER CONTAINING
IMAGE DISPLAY CONTROLLER AND PLL FREQUENCY
SYNTHESIZER FOR DIGITAL TUNING SYSTEMS
©
1994
Document No. IC-3525
(O.D. No. IC-8999)
Date Published November 1994 P
Printed in Japan


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