S1C17501

2

EPSON

● Internal Memories

• Flash EEPROM

- 128K bytes (S1C17501F0A)

- 96K bytes (S1C17501F1A)

• RAM

- 4K bytes

- 2K bytes (with battery backup feature)

● Operating Clock

• Main clock

- 48 MHz when the USB function is used

- 1 to 48 MHz (can be divided by 1 to 32) or 32.768 kHz when the USB function is not used

- On-chip oscillator (crystal or ceramic) or external clock input

• Sub clock

- 32.768 kHz (typ.) for the RTC

- On-chip oscillator (crystal)

● SRAM Controller

• Provides a 23-bit external address bus, an 8- or 16-bit width selectable data bus, and four chip enable signals to

support a maximum of 15M-byte external memory space.

● Interrupt Controller

• Four non-maskable interrupts

- Reset (#RESET pin or watchdog timer)

- Address misaligned

- Debug

- NMI (#NMI pin or watchdog timer)

• 27 maskable interrupts

- Port inputs (eight systems)

- PWM control capture timer/counter (one system)

- A/D converter (two systems)

- 16-bit timer of clock generator (one system)

- 8-bit timers of clock generator (two systems)

- UART (one system)

- SPI (two systems)

- I

- RTC (one system)

- 8-bit timers (four systems)

- USB function controller (one system)

- I

- Remote controller (one system)

- The interrupt level (priority) of each maskable interrupt system is configurable (levels 0 to 7).

● Prescaler

• Generates the source clocks for the clock generator.

● PWM Control Capture Timer/Counters

• One channel of 16-bit timer/counter with PWM output function is available.

• Can generate two compare-match interrupts.

• Supports the IGBT output control function using the A/D converter out-of-range signal.

● Clock Generator

• One channel of 16-bit timer and two channels of 8-bit timers are available.

• Can be used as the clock source for the UART, SPI, and I

• Each timer can generate an underflow interrupt.