uPD754302,uPD754304 pdf datash

The mPD754302 and 754304 are two of the 4-bit single-chip microcontrollers of the new 75XL series, which has a data processing ability equivalent to that of 8-bit microcontrollers. The microcontrollers realize low-voltage and high-speed processing, and offer an improved CPU function.The CPU mounted on the 75XL series is equivalent to the one used in the highest grade model of the conventional 75X series. Therefore, with the mPD754302 and 754304, more efficient programs can be prepared compared to the
conventional 75X series. As a 36-pin small package is used, a low-voltage (1.8 V) and high-speed processing (0.95 ms:at fX = 4.19 MHz) is realized. These microcontrollers are therefore suited for small units which are battery-operated.
FEATURES
• Program memory (ROM) : mPD754302 .......... 2048 x 8 bits
mPD754304 .......... 4096 x 8 bits
• Data memory (RAM) : 256 x 4 bits
• Instruction execution time (variable)
. 0.95 ms/1.91 ms/3.81 ms/15.3 ms (system clock; at fX = 4.19 MHz)
. 0.67 ms/1.33 ms/2.67 ms/10.7 ms (system clock; at fX = 32.768 kHz)
• Three channels of timers
. 8-bit basic interval timer/watchdog timer
. 8-bit timer/event counter: 2 channels
• Serial interface on-chip
. 3-wire serial I/O mode
. 2-wire serial I/O mode
• Input pins : 8 lines
I/O pins : 22 pins (including 4 N-ch open-drain pins)
• Supply voltage: VDD = 1.8 to 5.5 V
• PROM version (one-time PROM): mPD75P4308
• Small 36-pin package is used (300 mil, 0.8-mm pitch)