NEC PD78058F(A) Manuale Utente

µ

ROM

Mask ROM

PROM

48 Kbytes

60 Kbytes

60 Kbytes

High-speed RAM

1024 bytes

1024 bytes

Buffer RAM

32 bytes

Expansion RAM

None

1024 bytes

1024 bytes

Memory space

64 Kbytes

General register

8 bits 

×

 8 

×

 4 banks

With main system clock selected

0.4 

µ

s/0.8 

µ

s/1.6 

µ

s/3.2 

µ

s/6.4 

µ

s/12.8 

µ

s (at 5.0-MHz operation)

With subsystem clock selected

122 

µ

s (at 32.768-kHz operation)

Instruction set

• 16-bit operation

• Multiply/divide (8 bits 

×

 8 bits, 16 bits 

÷

 8 bits)

• Bit manipulate (set, reset, test, and Boolean operation)

• BCD adjust, etc.

I/O port

• Total

: 69

• CMOS input

: 2

• CMOS I/O

: 63

• N-ch open-drain I/O : 4

A/D converter

8-bit resolution 

×

 8 channels

D/A converter

8-bit resolution 

×

 2 channels

Serial interface

• 3-wire serial I/O/SBI/2-wire serial I/O mode selection possible : 1 channel

• 3-wire serial I/O mode (Max. 32-byte on-chip auto-transmit/receive) : 1 channel

• 3-wire serial I/O/UART mode selectable : 1 channel

Timer

• 16-bit timer/event counter

: 1 channel

• 8-bit timer/event counter

: 2 channels

• Watch timer

: 1 channel

• Watchdog timer

: 1 channel

Timer output

Three outputs: (14-bit PWM output enable: 1)

Clock output

19.5 kHz, 39.1 kHz, 78.1 kHz, 156 kHz, 313 kHz, 625 kHz, 1.25 MHz,

2.5 MHz, 5.0 MHz (at 5.0-MHz operation with main system clock)

32.768 kHz (at 32.768-kHz operation with subsystem clock)

1. The capacities of the internal PROM and the internal high-speed RAM can be changed using the

memory size switching register (IMS).

2. The capacity of the internal expansion RAM can be changed using the internal expansion RAM size

switching register (IXS).

Item

Part Number

Minimum
instruction
execution
time

Internal

memory

µ

PD78056F

µ

PD78058F

µ

PD78P058F