CP80S54 datasheet(3/47 Pages) ETC2

Part #	CP80S54

Description	EPROM/ROM-Based 8-Bit Microcontroller Series

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Manufacturer	ETC2 [List of Unclassifed Manufacturers]

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Rev0.1 Nov 30, 2005

P.3/

CP80S54/S56

PIN CONNECTION

PDIP, SOP

SSOP

PIN DESCRIPTIONS

Name

I/O

Description

IOA0 ~ IOA7

I/O

IOA0 ~ IOA7 as bi-direction I/O port, and IOA5 is an input only pin.

IOB0/INT

I/O

Bi-direction I/O pin with system wake-up function / External interrupt input

IOB1 ~ IOB7

I/O

Bi-direction I/O port with system wake-up function

T0CKI

I

Clock input to Timer0. Must be tied to Vss or Vdd, if not in use, to reduce current

consumption

RSTB

I

System clear (RESET) input. This pin is an active low RESET to the device.

OSCI

I

X’tal type: Oscillator crystal input

RC type: Clock input of RC oscillator

OSCO

O

X’tal type: Oscillator crystal output.

RC mode: Outputs with the instruction cycle rate

Vdd

-

Positive supply

Vss

-

Ground

Legend: I=input, O=output, I/O=input/output

CP8054S

CP8054SE

CP8056S

CP8056SE

IOA2

18

1

17

16

15

14

13

12

11

10

2

3

4

5

6

7

8

9

IOA3

IOA4/T0CKI

IOA5/RSTB

Vss

IOB0/INT

IOB1

IOB2

IOB3

IOA0

IOA7/OSCI

IOA1

IOA6/OSCO

IOB7

IOB6

Vdd

IOB5

IOB4

CP8054S

CP8054SE

CP8056S

CP8056SE

IOA2

IOA3

IOA4/T0CKI

IOA5/RSTB

Vss

IOB0/INT

IOB1

IOB2

IOA0

IOA7/OSCI

IOA1

IOA6/OSCO

Vdd

IOB7

Vdd

IOB6

IOB5

IOB3

IOB4

20

1

19

18

17

16

15

14

13

12

2

3

4

5

6

7

8

9

11

10

CP

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