DATA SHEET
MOS INTEGRATED CIRCUIT
µPD780021A(A), 780022A(A), 780023A(A), 780024A(A)
780021AY(A), 780022AY(A), 780023AY(A), 780024AY(A)
8-BIT SINGLE-CHIP MICROCONTROLLERS
DESCRIPTION
The µPD780021A(A), 780022A(A), 780023A(A), 780024A(A), 780021AY(A), 780022AY(A), 780023AY(A) and
780024AY(A) are products to which a quality assurance program more stringent than that used for the µPD780021A,
780022A, 780023A, 780024A, 780021AY, 780022AY, 780023AY and 780024AY (standard models) is applied (NEC
classifies these products as “special” quality grade models).
The µPD780021A(A), 780022A(A), 780023A(A), and 780024A(A) are members of the µPD780024A Subseries of
the 78K/0 Series. Only selected functions of the existing µPD78054 Subseries are provided, and the serial interface
is enhanced.
The µPD780021AY(A), 780022AY(A), 780023AY(A), and 780024AY(A) are the µPD780024A Subseries with a
multimaster supporting I2C bus interface, which makes them suitable for AV equipment.
Flash memory versions, the µPD78F0034A and 78F0034AY, that can operate in the same power supply voltage
range as the mask ROM versions, and various development tools, are also available.
Detailed function descriptions are provided in the following user’s manuals. Be sure to read them before
designing.
µPD780024A, 780034A, 780024AY, 780034AY
Subseries User’s Manual:
U14046E
U12326E
78K/0 Series User’s Manual Instructions:
FEATURES
•
Internal ROM and RAM
Item Program Memory
(Internal ROM)
Data Memory
(Internal High-Speed RAM)
Package
Part Number
µPD780021A(A), 780021AY(A)
µPD780022A(A), 780022AY(A)
µPD780023A(A), 780023AY(A)
µPD780024A(A), 780024AY(A)
8 KB
16 KB
24 KB
32 KB
512 bytes
• 64-pin plastic SDIP (19.05 mm (750))
• 64-pin plastic QFP (14 × 14)
1024 bytes
• 64-pin plastic TQFP (12 × 12)
• 64-pin plastic LQFP (10 × 10)
•
•
External memory expansion space: 64 KB
Minimum instruction execution time
• µPD780021A(A), 780022A(A), 780023A(A), 780024A(A): 0.166 µs (fX = 12 MHz, VDD = 4.5 to 5.5 V)
• µPD780021AY(A), 780022AY(A), 780023AY(A), 780024AY(A): 0.24 µs (fX = 8.38 MHz, VDD = 4.0 to 5.5 V)
I/O ports: 51 (N-ch open-drain (5 V withstanding voltage): 4)
•
•
•
8-bit resolution A/D converter: 8 channels (AVDD = 1.8 to 5.5 V)
Serial interface: 3 channels
•
•
µPD780021A(A), 780022A(A), 780023A(A), 780024A(A): UART mode, 3-wire serial I/O mode (2 channels)
µPD780021AY(A), 780022AY(A), 780023AY(A), 780024AY(A): UART mode, 3-wire serial I/O mode, I2C bus mode
•
•
Timer: 5 channels
Power supply voltage: VDD = 1.8 to 5.5 V
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. U15131EJ2V0DS00 (2nd edition)
Date Published April 2002 N CP(K)
Printed in Japan
The mark
shows major revised points.
2000
©