參數(shù)資料
型號(hào)： KS57C2504
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
元件分類(lèi)： 4位微控制器
英文描述： 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER
中文描述： 4位單片機(jī)的小型通用紅外遙控器
文件頁(yè)數(shù)： 1/94頁(yè)
文件大小： 763K
代理商： KS57C2504
KS57C2504
4-BIT CMOS Microcontroller
Product Specification
4–1
OVERVIEW
The S3C7254 single-chip CMOS microcontroller has been designed for high performance using Samsung's
newest 4-bit CPU core, SAM4
(Samsung Arrangeable Microcontrollers).With a two-channel comparator, up-to-
320-dot LCD direct drive capability, 8-bit timer/counter, and serial I/O, the S3C7254 offers an excellent design
solution for a wide variety of applications which require LCD functions.
Up to 27 pins of the 80-pin QFP package can be dedicated to I/O. Eight vectored interrupts provide fast response
to internal and external events. In addition, the S3C7254's advanced CMOS technology provides for low power
consumption and a wide operating voltage range.
FEATURES
Memory
512
×
4-bit RAM
4096
×
8-bit ROM
27 I/O Pins
I/O: 15 pins
Input only: 4 pins
Output only: 8 pins
Comparator
Two-channel mode: internal
reference (4-bit resolution)
One-channel mode: external
reference
LCD Controller/Driver
40 segments and 8 common
terminals
3, 4 and 8 common
selectable
Internal resistor circuit for
LCD bias
All dot can be switched
on/off
8-Bit Basic Timer
4 interval timer functions
8-Bit Timer/Counter
Programmable 8-bit timer
External event counter
Arbitrary clock frequency
output
External clock signal divider
Serial I/O interface clock
generator
Watch Timer
Time interval generation:
0.5 s, 3.9 ms at 32768 Hz
Four frequency outputs to
BUZ pin
Clock source generation for
LCD
8-Bit Serial I/O Interface
8-bit transmit/receive mode
8-bit receive only mode
LSB-first or MSB-first
transmission selectable
Internal or external clock
source
Interrupts
Three internal vectored
interrupts
Four external vectored
interrupts
Two quasi-interrupts
Bit Sequential Carrier
Supports 16-bit serial data
transfer in arbitrary format
Memory-Mapped I/O Structure
Data memory bank 15
Two Power-Down Modes
Idle mode (only CPU clock
stops)
Stop mode (main system
oscillation stops)
Oscillation Sources
Crystal, ceramic, or RC for
main system clock
Crystal oscillator for
subsystem clock
Main system clock
frequency: 4.19 MHz
(typical)
Subsystem clock frequency:
32.768 kHz
CPU clock divider circuit (by
4, 8, or 64)
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