NEC PD750004 Manuale Utente

µPD750008 USER'S MANUAL

Item Function

Instruction execution • 0.95, 1.91, 3.81, 15.3 µs (when the main system clock operates at 4.19 MHz)
time • 0.67, 1.33, 2.67, 10.7 µs (when the main system clock operates at 6.0 MHz)

• 122 µs (when the subsystem clock operates at 32.768 kHz)

Internal memory ROM 4096 x 8 bits (µPD750004)

6144 x 8 bits (µPD750006)

8192 x 8 bits (µPD750008)

16384 x 8 bits (µPD75P0016)

RAM 512 x 4 bits

General register • When operating in 4 bits:  8 x 4 banks

• When operating in 8 bits:  4 x 4 banks

I/O port 34 8 CMOS input pins Can incorporate 25 pull-up resistors

18 CMOS I/O pins

that are specified with the software.

Four pins can directly drive
the LED.

8 N-ch open-drain I/O pins Can withstand 13 V.

Eight pins can directly drive Can incorporate pull-up resistors that
the LED. are specified with the mask option.

Timer 4 • Timer/event counter:  1 channel

• Timer counter:  1 channel
• Basic interval timer/watchdog timer:  1 channel
• Clock timer:  1 channel

Serial interface • Three-wire serial I/O mode (switchable between the start LSB and the start MSB)

• Two-wire serial I/O mode
• SBI mode

Bit sequential buffer 16 bits

Clock output •

F

, 524 kHz, 262 kHz, 65.5 kHz (when the main system clock operates at 4.19 MHz)

•

F

, 750 kHz, 375 kHz, 93.7 kHz (when the main system clock operates at 6.0 MHz)

Vectored interrupt External:  3, Internal:  4

Test input External:  1, Internal:  1

System clock oscillator • Ceramic or crystal oscillator for the main system clock

• Crystal oscillator for the subsystem clock

Standby function STOP/HALT mode

Operating ambient T

A 

–40°C to +85°C

temperature

Supply voltage V

DD 

2.2 to 5.5 V

Package 42-pin plastic shrink DIP (600 mil)

44-pin plastic QFP (10 x 10 mm)

Note The N-ch open-drain I/O port pins of the µPD75P0016 are not connected to pull-up resistors by mask

option, and are always open.

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