• Max. frequency: 32 MHz
• ROM capacities: 256 KB to 512 KB
• RAM capacities: 16 KB to 32 KB
• Package: 80-pin plastic LQFP
• Minimum instruction execution time: 31.25 ns (operating with main clock (fXX) of 32 MHz)
• General-purpose registers: 32 bits x 32 registers
• CPU features:
  - Signed multiplication (16 x 16 -> 32): 1 to 2 clocks
  - Signed multiplication (32 x 32 -> 64): 1 to 5 clocks
  - Saturated operations (overflow and underflow detection functions included)
  - 32-bit shift instruction: 1 clock
  - Bit manipulation instructions
  - Load/store instructions with long/short format
• Memory space: 64 MB of linear address space (for programs and data)
• Interrupts and exceptions:
  - Non-maskable interrupts: 2 sources (external: 1, internal: 1)
  - Maskable interrupts: 72 sources (external: 15, internal: 57) (µPD70F3755) / 78 sources (external: 15, internal: 63) (µPD70F3757)
  - Software exceptions: 32 sources
  - Exception trap: 2 sources
• I/O ports: 84
• Timer function:
  - 16-bit interval timer M (TMM): 1 channel
  - 16-bit timer/event counter AA (TAA): 5 channels
  - 16-bit timer/event counter AB (TAB): 1 channel
  - Watch timer: 1 channel
  - Watchdog timer 2: 1 channel
• Serial interface:
  - Asynchronous serial interface D (UARTD): 3 channels (µPD70F3755) / 6 channels (µPD70F3757) - 3-wire variable-length serial interface B (CSIB): 2 channels
  - I2C bus: 1 channel
• A/D converter: 10-bit resolution: 24 channels
• DMA controller: 4 channels (transfer target: on-chip peripheral I/O, internal RAM)
• DCU (debug control unit): JTAG interface
• Clock generator:
  - During main clock or subclock operation
  - 7-level CPU clock (fXX, fXX/2, fXX/4, fXX/8, fXX/16, fXX/32, fXT)
  - Clock-through mode/PLL mode (x8)/SSCG mode selectable
  - Low-speed internal oscillation clock (fRL): 240 kHz (TYP.)
  - High-speed internal oscillation clock (fRH): 8 MHz (TYP.)
• Power-save functions: HALT/IDLE1/IDLE2/STOP/subclock/sub-IDLE mode