TC9327BFG Datasheet | Toshiba

Features - 4 bit microcontroller for single-chip digital tuning systems. - Operating voltage VDD = 1.8 to 3.6 V, with low current consumption due to CMOS circuitry (with only the CPU operating when VDD = 3 V, IDD = 100 µA max) - Built-in prescaler (1/2 fixed divider +2 modulus prescaler: fmax ≥ 230 MHz) - Features built-in 1/4-duty, 1/2-bias LCD drivers and a built-in 3 V booster circuit for the display. - Data memory (RAM) and ports are easily backed up. - Program memory (ROM): 16 bit × 7168 steps - Data memory (RAM): 4 bit × 256 words - 62-instruction set (all one-word instructions) - Instruction execution time: 40 µs (with 75-k Hz crystal) (MVGS, DAL instructions: 80 µs) - Many addition and subtraction instructions (12 types each addition and subtraction) - Powerful posite decision instructions (TMTR, TMFR, TMT, TMF, TMTN, TMFN) - Data can be transmitted between addresses on the same row. - Register indirect transfer available (MVGD, MVGS instructions). - 16 powerful general registers (located in RAM) - Stack levels: 2 - Free branching (JUMP instructions) is allowed in the 7168 steps of program memory (ROM) as there are no pages or fields. - 16 bits of any address in the 1024 program memory steps (ROM) can be referenced (DAL instructions). - Features independent frequency input pins (FMIN and AMIN) and two (DO1 and DO2) phase parator outputs for FM/VHF and AM. - Seven kinds of reference frequencies can be selected via software. - Powerful input/output instructions (IN1 to 3, OUT1 to 3). - Dedicated input ports (K0 to K3) for key input, 29 LCD drive pins (100 segments maximum) available. - 29 I/O ports: 27 input/output programmable in 1-bit units, 1 output-only port, and 1 input-only port. The 2 IFIN, and DO1 pins can be switched by instruction to IN1 (input-only) or OT2 (output-only). In addition, 9 output LCD output pins for S17 to S25 can be switched to I/O port in 1-bit units. - Three backup modes available by instruction: Only CPU operation, crystal...