EM78F651NAMSSLASHNAMJ datasheet(17/58 Pages) EMC

17 / 58 page

EM78F651N

8-Bit Microcontroller

Product Specification (V1.1) 10.20.2006

• 13

(This specification is subject to change without further notice)

6.2 Special Function Registers

6.2.1 A (Accumulator)

Internal data transfer operation, or instruction operand holding usually involves the

temporary storage function of the Accumulator, which is not an addressable register.

6.2.2 CONT (Control Register)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

/INT

PSTE

PST2

PST1

PST0

Bit 7

Not used, set to “0” at all time.

Bit 6 (/INT): Interrupt enable flag

0 : masked by DISI or hardware interrupt

1 : enabled by ENI/RETI instructions

Bit 5 (TS): TCC signal source

0 : internal instruction cycle clock

1 : transition on TCC pin

Bit 4 (TE): TCC signal edge

0 : increment if a transition from low to high takes place on TCC pin

1 : increment if a transition from high to low takes place on TCC pin

Bit 3 (PSTE): Prescaler enable bit for TCC

0 : prescaler disable bit, TCC rate is 1:1

1 : prescaler enable bit, TCC rate is set as Bit 2~Bit 0

Bit 0 (PST0) ~ Bit 2 (PST2): TCC prescaler bits

PST2

PST1

PST0

TCC Rate

1:2

1:4

1:8

1:16

1:32

1:64

1:128

1:256

CONT register is both readable and writable.

EM78F651NAMS/NAMJ Datenblatt(PDF) 17 Page - ELAN Microelectronics Corp

EM78F651NAMS/NAMJ Datenblatt(HTML) 17 Page - ELAN Microelectronics Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58

Datenblatt Download

Link URL