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PDF UPD78085x Data sheet ( Hoja de datos )
| Número de pieza | UPD78085x | |
| Descripción | 8 Bit Single-Chip Microcontrollers | |
| Fabricantes | NEC | |
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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD780851(A), 780852(A)
8-BIT SINGLE-CHIP MICROCONTROLLERS
The µPD780851(A) and 780852(A) are products of the µPD780852 Subseries in the 78K/0 Series.
The µPD780851(A) and 780852(A) include a meter controller/driver, sound generator, LCD controller/driver, 8-bit
resolution A/D converter, timer, serial interface, interrupt function, and various other peripheral hardware.
A flash memory version, the µPD78F0852, which can operate in the same power supply voltage range as the
mask ROM version, 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.
µPD780852 Subseries User's Manual:
U14581E
78K/0 Series User's Manual - Instruction: U12326E
FEATURES
{ Meter controller/driver: 16 PWM outputs (8-bit resolution)
{ Sound generator: 1 channel
{ Internal ROM and RAM
Part Number
µPD780851(A)
µPD780852(A)
Item
Program Memory
(Internal ROM)
32 KB
40 KB
Internal High-Speed
RAM
1024 bytes
Data Memory
Internal Expansion
RAM
512 bytes
LCD Display RAM
20 × 4 bits
{ Minimum instruction execution time can be changed from high-speed (0.24 µs) to low-speed (3.81 µs)
{ I/O ports: 56 (Including segment signal output alternate function pins)
{ 8-bit resolution A/D converter: 5 channels
{ Serial interface: 3 channels
{ Timer: 6 channels
{ Supply voltage: VDD = 4.0 to 5.5 V
APPLICATIONS
Automobile meter (dashboard) control
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. U14577EJ1V0DS00 (1st edition)
Date Published October 2001 NS CP(K)
Printed in Japan
The mark shows major revised points.
2000
1 page  
µPD780851(A), 780852(A)
OVERVIEW OF FUNCTIONS
Part Number
µPD780851(A)
µPD780852(A)
Item
Internal
memory
ROM
High-speed RAM
Expansion RAM
LCD display RAM
General-purpose registers
Minimum instruction execution time
Instruction set
I/O ports (segment signal output
alternate function pins included)
A/D converter
LCD controller/driver
Serial interface
Timers
Timer outputs
Meter controller/driver
Sound generator
Clock output
Vectored interrupt
sources
Maskable
Non-maskable
Software
Supply voltage
Operating ambient temperature
Package
32 KB
40 KB
1024 bytes
512 bytes
20 × 4 bits
8 bits × 32 registers (8 bits × 8 registers × 4 banks)
On-chip minimum instruction execution time variable function
0.24 µs/0.48 µs/0.95 µs/1.91 µs/3.81 µs (@ 8.38 MHz operation)
• 16-bit operation
• Multiply/divide (8 bits × 8 bits, 16 bits ÷ 8 bits)
• Bit manipulation (set, reset, test, Boolean operation)
• BCD adjust, etc.
Total:
56
• CMOS input:
5
• CMOS output:
16
• CMOS I/O:
35
• 8-bit resolution × 5 channels
• Power-fail detection function
• Segment signal outputs:
Max. 20
• Common signal outputs:
Max. 4
• Bias:
1/3 bias only
• 3-wire serial I/O mode:
2 channels
• UART mode:
1 channel
• 16-bit timer:
1 channel
• 8-bit timer:
1 channel
• 8-bit timer/event counter:
2 channels
• Watch timer:
1 channel
• Watchdog timer:
1 channel
2 (capable of 8-bit PWM output: 2)
PWM output (8-bit resolution): 16
Pulse width setting of 8 + 1-bit precision is enabled by a 1-bit addition function
1 channel
65.5 kHz, 131 kHz, 262 kHz, 524 kHz, 1.04 MHz, 2.09 MHz, 4.19 MHz, 8.38 MHz (@
8.38 MHz operation with main system clock)
Internal: 16, External: 3
Internal: 1
1
VDD = SMVDD = 4.0 to 5.5 V
TA = −40 to + 85°C
80-pin plastic QFP (14 × 14 mm)
Data Sheet U14577EJ1V0DS
5
5 Page 
µPD780851(A), 780852(A)
3.2 Non-Port Pins
Pin Name
INTP0 to INTP2
SI2
SO2
SCK2
SI3
SO3
SCK3
RxD
TxD
TI00
TI01
TI02
TIO2
TIO3
TPO
PCL
SGO
S0 to S4
S5 to S12
S13 to S19
COM0 to COM3
VLCD
SM11 to SM14
SM21 to SM24
SM31 to SM34
SM41 to SM44
ANI0 to ANI4
AVREF
AVSS
RESET
X1
X2
SMVDD
SMVSS
VDD0
VSS0
VROUT
VSS1
IC
I/O Function
Input
Input
Output
I/O
Input
Output
I/O
Input
Output
Input
I/O
Output
Output
Output
Output
External interrupt request input for which the valid edge (rising edge,
falling edge, or both rising and falling edges) can be specified
Serial interface SIO2 serial data input
Serial interface SIO2 serial data output
Serial interface SIO2 serial clock input/output
Serial interface SIO3 serial data input
Serial interface SIO3 serial data output
Serial interface SIO3 serial clock input/output
Serial data input for asynchronous serial interface
Serial data output for asynchronous serial interface
Capture trigger signal input to capture register (CR00)
Capture trigger signal input to capture register (CR01)
Capture trigger signal input to capture register (CR02)
8-bit timer (TM2) I/O (also used for 8-bit PWM output)
8-bit timer (TM3) I/O (also used for 8-bit PWM output)
16-bit timer (TM0) prescaler signal output
Clock output (for trimming of main system clock)
Sound generator signal output
LCD controller/driver segment signal output
Output
−
Output
LCD controller/driver common signal output
Power supply for LCD drive
Meter control signal output
Input
Input
−
Input
Input
−
−
−
−
−
−
−
−
A/D converter analog input
A/D converter reference voltage input (also used for analog power
supply)
A/D converter ground potential. Connect to VSS0.
System reset input
Connecting crystal resonator for main system clock oscillation
Meter controller/driver power supply
Meter controller/driver ground potential
Port block positive power supply
Port block ground potential
Regulator output pin for positive power supply other than port block.
Connect to VSS0 or VSS1 via a 0.1 µF capacitor.
Ground potential (other than port block)
Internally connected. Connect directly to VSS0 or VSS1.
After
Reset
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Output
Input
Output
−
Hi-Z
Input
−
−
−
−
−
−
−
−
−
−
−
−
Alternate
Function
P00 to P02
P05
P04
P03
P52
P51
P50
P53
P54
P40
P41
P42
P43
P44
PCL/P60
TPO/P60
P61
−
P97 to P90
P87 to P81
−
−
P20 to P23
P24 to P27
P30 to P33
P34 to P37
P10 to P14
−
−
−
−
−
−
−
−
−
−
−
−
Data Sheet U14577EJ1V0DS
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet UPD78085x.PDF ] | |
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