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The S3P7588X single-chip CMOS microcontroller has been designed for high-performance using SAM 47 (Samsung Arrangeable Microcontrollers). SAM 47, Samsung's newest 4-bit CPU core is notable for its low energy consumption and low operating voltage.
With it's DTMF generator, watchdog timer function, versatile 8-bit timer/counters, and Caller ID module the S3P7588X offers an excellent design solution for a wide variety of telecommunication applications.
Up to 25 pins of the available 100-pin TQFP package can be assign to I/O. Six vectored interrupts provide fast response to internal and external events. In addition, the S3P7588X's advanced CMOS technology provides for low power consumption and a wide operating voltage range.
The S3P7588X has two package options, one is TQFP type and the other is pellet type. Only pellet type can be ordered for mass production. The TQFP type is provided only for system software development.
OTP
The S3P7588X microcontroller has an on-chip 8K-byte one-time-programable EPROM instead of masked ROM, which provides comfortable environments for new application development.

• Memory
  - 768 X 4-bit RAM
  - 8,192 X 8-bit EPROM
• 28 I/O Pins
  - Input only: 3 pins
  - I/O: 25 pins
  - N-channel open-drain I/O: 8 pins
• Memory-Mapped I/O Structure
  - Data memory bank 15
• Caller Id
  - 1200 baud FSK (Frequency Shift Keying) demodulator with sensitivity -38dBm (600W) confirms to Bell 202 and CCITT V.23 standards
  - Receive sensitivity of –32dBm (in 600W) for CAS (CPE Alerting Signal)
  - Stutter Dial Tone (SDT) detector with sensitivity of -36dBm
  - Ring or line reversal detector
  - On-hook and off-hook applications according to Bellcore TR-NWT-000030 and SR-TSV-002476 specifications
  - Compatible with ETSI standards ETS 300 659-1 and ETS 3000 659-2
• DTMF Generator
  - 16 dual-tone frequencies for tone dialing
• 8-Bit Basic Timer
  - Programmable interval timer
  - Watchdog timer
• Two 8-Bit Timer/Counters
  - Programmable 8-bit timer
  - External event counter function
  - Arbitrary clock frequency output
• Watch Timer
  - Real-time and interval time measurement
  - Four frequency outputs to the BUZ pin
  - Bit Sequential Carrier
  - Supports 8-bit serial data transfer in arbitrary format
• Interrupts
  - 2 external interrupt vectors
  - 4 internal interrupt vectors
  - 2 quasi-interrupts
• Power-Down Modes
  - Idle: Only CPU clock stops
  - Stop: System clock stops
• Oscillation Sources
  - Crystal, or ceramic for main system clock
  - Main system clock frequency: 0.4–6.0MHz.
  3.579545MHz is mandatory for caller id application
  - CPU clock divider circuit (by 4, 8, or 64)
• Instruction Execution Times
  - 0.95, 1.91, and 15.3ms at 4.19MHz
  - 1.12, 2.23, 17.88ms at 3.58MHz
  - 0.67, 1.33, 10.7ms at 6.0MHz
• Operating Temperature
  - 0°C to 70°C
• Operating Voltage Range
  - 3.0V to 5.5V
• Package Types
  - 100-TQFP-1414 (only for system development)
  - Pellet version is available (for mass production)