D75104
D75104 is UPD75104 manufactured by NEC.
ESCRIPTION
µPD75108 is a 4-bit single-chip microputer integrating timer/event counters, serial interface, and vector interrupt function, in addition to a CPU, ROM, RAM, and I/O ports, on a single chip. Operating at high speeds, the microputer 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, µPD75108 is suitable for controlling such systems as VTRs, acoustic products, button telephones, radio munications equipment, and printers. A pin-patible EPROM model is also available for evaluation of system development and small-scale production of application systems.
Detailed functions are described in the following user’s manual. Be sure to read it for designing.
µPD751XX Series User’s Manual: IEM-922
Features
- Internal memory
- Program memory (ROM) : 8068 × 8 bits (µ PD75108) : 6016 × 8 bits (µ PD75106) : 4096 × 8 bits (µ PD75104)
- Data memory (RAM) : 512 × 4 bits ( µPD75108) : 320 × 4 bits ( µPD75106, 75104)
- New architecture “75X series” rivaling 8-bit microputers
- 43 systematically organized instructions
- A wealth of bit manipulation instructions
- 8-bit data transfer, pare, 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 µs (at 4.19 MHz), 5 V
- Power-saving, instruction time change function: 0.95 µ s/1.91 µs/15.3 µs (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
- Model with PROM is available: µPD75P108B (One-time PROM, EPROM) Unless there are differences among µPD75104, 75106, and 75108 functions, µPD75108 is treated as the representative...
