S3C72E8 Datasheet, PDF (2/27 Pages) Samsung semiconductor – The S3C72E8/P72E8 is a SAM47 core-based 4-bit CMOS single-chip microcontroller. It has a timer/counter and LCD drivers.

PRODUCT OVERVIEW
FEATURES SUMMARY
Memory
• 8192 × 8 bit program memory
• 5120 × 4 bit data memory in S3C72E8
• 108 x 5 bit display memory
39 I/O Pins
• Input: 6 pins
• I/O: 17 pins
• Output: maximum 16 pins for 1-bit level output
(sharing with segment driver outputs)
8-Bit Basic Timer
• Four internal timer functions
8-Bit Timer/Counter 0
• Programmable 8-bit timer
• External event counter
• Arbitrary clock frequency output
• External clock signal divider
Watch Timer
• Time interval generation: 0,5ms, 3,9ms at
32768Hz
• 4 frequency (2/4/8/16 kHz) outputs to BUZ pin
Interrupts
• Three external vectored interrupts: INT0, INT1,
INTP0
• Two internal vectored interrupts: INTB, INTT0
• Two quasi-interrupts: INTW, INT2
Memory Mapped I/O Structure
S3C72E8/P72E8
LCD Display
• 12 characters dot matrix display (5 x 7)
• 12 digit display (8 segments)
• 60 segments and 9 common pins
Power-Down Modes
• Idle mode (only CPU clock stops)
• Stop mode (Main-System clock and CPU clock
stops)
Oscillation Sources
• Crystal, ceramic, or External RC for system clock
• Main-system clock frequency: 0.4 MHz - 6MHz
• Sub-system clock frequency: 32,768kHz
• CPU clock divider circuit (by 4,8, or 64)
Instruction Execution Times
• 0.67, 1.33, 10.7 µs at 6MHz
• 0.95, 1.91, 15.3 µs at 4.19 MHz
• 122 µs at 32.768 kHz
Operating Temperature
• -45 °C to 85 °C
Operating Voltage Range
• 1.8 V to 5.5 V
Package Type
• 100-pin QFP Package
1-2