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S3C7281

Features: Memory` 1024 x 8 bit program memory` 64 x 4 bit data memory (Including stack and excluding LCD RAM)14 I/O Pins` I/O: 6 pins` Output: 8 pins(Sharing with segment outputs)8-Bit Basic Timer` 4 clock source(0.26, 2.1, 8.2, 32.8ms at 1MHz)` Watch-dog timerWatch Timer` Quasi interrupt(stand by...

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S3C7281: Features: Memory` 1024 x 8 bit program memory` 64 x 4 bit data memory (Including stack and excluding LCD RAM)14 I/O Pins` I/O: 6 pins` Output: 8 pins(Sharing with segment outputs)8-Bit Basic Timer` ...

S3C7281 Data Sheet

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Part Number:
S3C7281
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/12/26

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Product Details

Description



Features:

Memory
` 1024 x 8 bit program memory
` 64 x 4 bit data memory (Including stack and excluding LCD RAM)

14 I/O Pins
` I/O: 6 pins
` Output: 8 pins(Sharing with segment outputs)

8-Bit Basic Timer
` 4 clock source(0.26, 2.1, 8.2, 32.8ms at 1MHz)
` Watch-dog timer

Watch Timer
` Quasi interrupt(stand by release mode only)
` Time divider: 3.91, 32, 125, 500ms at fw=32.8kHz
` BUZ, BUZ output(0.5, 1, 2, 4kHz at 1MHz<main>, 32.8kHz<sub>)

Key Interrupt input(Quasi-interrupt)
` Falling edge detection(KS0, KS1)
` Stand by mode(idle, stop) release

Power on RESET (Program ROM MASK option)
` Initial power on RESET
` Reset operation under 2.0V

LCD Display
` 16 segments and 4 common pins
` 2, 3, and 4 common selectable
` Internal resistor for LCD bias(170 K)

Memory Mapped I/O Structure
` Data memory bank 15

Power-Down Modes
` Idle: only CPU clock stops
` Stop: Main System clock and CPU clock stops
` Subsystem clock stop mode

Oscillation Sources
` Main: Internal RC OSC(1MHz)
` Sub: External 32.8kHz crystal only

Instruction Execution Times
` Main system clocks:4, 8, 64ms at 1MHz
` Subsystem clocks: 122 s at 32.768 kHz

Operating Voltage Range
` 1.8 V to 5.5 V at 1MHz/32.8kHz

Power Consumption(The LVD circuit needs 100uA or more current on all the below mode)
` Main: Operation - 0.5mA at 1MHz, 3V
` Sub: Operation - 12mA at LCD off, 3V Idle - 5mA at LCD off idle, 3V Stop - 1mA at 5.5V

Operating Temperature
` - 40   to 85

Package Type
` 32-SOP-450A Package



Pinout

Connection Diagram


Specifications

Parameter
Symbol
Conditions
Rating
Unit
Supply voltage
VDD
-
0.3 to +6.5
V
Input voltage
VI
Ports 0, 1
0.3 to VDD + 0.3
V
Output voltage
VO
-
-0.3 to VDD + 0.3
V
Output current high
IOH
One I/O pin active
-15
mA
All I/O pins active
30
Output current low
IOL
One I/O pin active
+ 30 (Peak value)
mA
+ 15(note)
Total for pins 0, 1, 2
+ 100 (Peak value)
+ 60(note)
Operating temperature
TA
-
40to + 85
Storage temperature
TSTG
-
65 to + 150

NOTE: The values for Output Current Low ( IOL ) are calculated as Peak Value *Duty.


Description

The S3C7281 is a SAM48 core-based 4-bit CMOS single-chip microcontroller. It is built around the SAM48 core CPU and contains ROM, RAM. 14 I/O lines, buzzer and inverted buzzer output, and LCD driver/controller with an up-to-64-dot.

The S3C7281 can be used for dedicated control functions in a variety of applications, and is especially designed for LCD general purpose.




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