Samsung 8-Bit CMOS Microcontroller Microcassette Recorder User Manual


 
PRODUCT OVERVIEW S3C9228/P9228
1-2
FEATURES
CPU
SAM88RCRI CPU core
Memory
8192 × 8 bits program memory (ROM)
264 × 8 bits data memory (RAM)
(Including LCD data memory)
Instruction Set
41 instructions
Idle and Stop instructions added for power-down
modes
36 I/O Pins
I/O: 34 pins (44-pin QFP, 42-pin SDIP)
Output only: 2 pins (44-pin QFP)
Interrupts
14 interrupt source and 1 vector
One interrupt level
8-Bit Basic Timer
Watchdog timer function
3 kinds of clock source
Two 8-Bit Timer/Counters
The programmable 8-bit timer/counters
External event counter function
Configurable as one 16-bit timer/counters
Watch Timer
Interval time: 3.91mS, 0.25S, 0.5S, and 1S
at 32.768 kHz
0.5/1/2/4 kHz Selectable buzzer output
Clock source generation for LCD
LCD Controller/Driver
16 segments and 8 common terminals
3, 4, and 8 common selectable
Internal resistor circuit for LCD bias
8-bit Serial I/O Interface
8-bit transmit/receive mode
8-bit receive mode
LSB-first or MSB-first transmission selectable
Internal or external clock source
A/D Converter
10-bit converter resolution
50us conversion speed at 1MHz f
ADC
clock
4-channel
Two Power-Down Modes
Idle: only CPU clock stops
Stop: system clock and CPU clock stop
Oscillation Sources
Crystal, ceramic, or RC for main clock
Main clock frequency: 0.4 MHz - 8MHz
32.768 kHz crystal oscillation circuit for
sub clock
Instruction Execution Times
500nS at 8MHz fx(minimum)
Operating Voltage Range
2.0 V to 5.5 V at 0.4 - 4.2MHz
2.7 V to 5.5 V at 0.4 - 8MHz
Operating Temperature Range
-25 °C to +85 °C
Package Type
44-pin QFP, 42-pin SDIP