1. Outline and Characteristics
The TMP90C041 is a high-speed advanced 8-bit microcontroller applicable to a variety of equipment. With its 8-bit CPU, A/D converter, multi-function timer/event counter and general-purpose serial interface integrated into a single CMOS chip, the TMP90C041 allows the expansion of external memories for programs (up to 64K byte) and data (1Mbyte).
The TMP90C041N is a 64-pin shrink DIP product. (SDIP64-P750)
The TMP90C041F is a 64-pin flat package product. (QFP64-P1420A)
The characteristics of the TMP90C041 include:

(1) Powerful instructions: 163 basic instructions, including Multiplication, division, 16-bit arithmetic operations, bitmanipulation instructions
(2) Minimum instruction executing time: 320ns (at 12.5MHz oscillation frequency)
(3) Memory expansion
External program memory: 64K byte
External data memory: 1M byte
(4) 8-bit A/D converter (6 channels)
(5) General-purpose serial interface (1 Channel)
         Asynchronous mode, I/O interface mode
(6) Multi-function 16-bit timer/event counter (1 channel)
(7) 8-bit timers (4 channels)
(8) Stepping motor control port (2 channels)
(9) Input/Output ports (28 pins)
(10) Interrupt function: 10 internal interrupts and 4 external
interrupts
(11) Micro Direct Memory Access (µDMA) function (11 channels)
(12) Watchdog timer
(13) Standby function (4 HALT modes)