UPD75108A

Features:

* Internal memory
  * Program memory (ROM)
     : 8064 * 8 bits (PD75108A)
     : 4096 * 8 bits (PD75104A)
  * Data memory (RAM)
    : 512 * 4 bits (PD75108A)
    : 320 * 4 bits (PD75104A)
* Architecture "75X" rivaling 8-bit microcomputers
* 43 systematically organized instructions
  * A wealth of bit manipulation instructions
  * 8-bit data transfer, compare, operation, increment, and decrement instructions
  * 1-byte relative branch instructions
  * GETI instruction executing 2-/3-byte instruction with one byte
* High speed. Minimum instruction execution time: 0.95 s (at 4.19 MHz, 5V)
* Instruction execution time change function: 0.95 s/1.91 s/15.3 s (at 4.19 MHz)
* I/O port pins as many as 58
* Three channels of 8-bit timers
* 8-bit serial interface
* Multiplexed vector interrupt function


Pinout




Specifications

Parameter	Symbol	Conditions		Ratings	Unit
Supply Voltage	VDD			-0.3 to +7.0	V
Input Voltage	VI1	Other than ports 12 to 14			V
	VI2*1	Ports 12 to 14	w/pull-up resistor	-0.3 to VDD+0.3	V
			Open drain	-0.3 to +13	V
Output Voltage	VO			-0.3 to VDD+0.3	V
High-Level Output Current	IOH	1 pin		-15	mA
		All pins		-30	mA
Low-Level Output Current	IOL*2	1 pin	Peak	30	mA
			rms	15	mA
		Total of ports 0, 2 to 4, 12 to 14	Peak	100	mA
			rms	60	mA
		Total of ports 5 to 9	Peak	100	mA
			rms	60	mA
Operating Temperature	Topt			-40 to +85	°C
Storage Temperature	Tstg			-65 to +150	°C

Description

UPD75108A is a 4-bit single-chip CMOS microcomputer having a data processing capability comparable to that of an 8-bit microcomputer.  Operating at high speeds, the microcomputer UPD75108A allows data to be manipulated in units of 1, 4, or 8 bits.  In addition, various bit manipulation instructions are provided to reinforce I/O manipulation capability.  Equipped with I/Os for interfacing with peripheral circuits operating on a different supply voltage, outputs that can directly drive LEDs, and analog inputs, UPD75108A is suitable for controlling such small equipments as cameras and VCRs.

Detailed functions of UPD75108A are described in the following user's manual.  Be sure to read it for designing. UPD751XX Series User's Manual: IEM-922