T48C893 datasheet(2/82 Pages) ATMEL

Part #	T48C893

Description	The multiple times programmable (MTP) version for the MARC4 ROM types

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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T48C893

Rev. A4, 22-Jan-02

2 (82)

T48C893

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

17

18

19

20

16

VDD

BP40/INT3/SC

BP53/INT1

BP52/INT1

BP51/INT6

BP50/INT6

OSC1

OSC2

BP60/T3O

BP10

VSS

BP43/INT3/SD

BP42/T2O

BP41/VMI/T2I

BP23

BP22

BP21

BP20/NTE

BP63/T3I

BP13

Figure 2. Pinning SSO20 package

Table 1 Pin description

Name

Type

Function

Alternate Function

Pin-No.

Reset State

VDD

Supply voltage

–––

1

NA

VSS

Circuit ground

–––

20

NA

BP10

I/O

Bidirectional I/O line of Port 1.0

–––

10

Input

BP13

I/O

Bidirectional I/O line of Port 1.3

–––

11

Input

BP20

I/O

Bidirectional I/O line of Port 2.0 NTE–test mode enable

13

Input

BP21

I/O

Bidirectional I/O line of Port 2.1

–––

14

Input

BP22

I/O

Bidirectional I/O line of Port 2.2

–––

15

Input

BP23

I/O

Bidirectional I/O line of Port 2.3

–––

16

Input

BP40

I/O

Bidirectional I/O line of Port 4.0 SC-serial clock or INT3 external

interrupt input

2

Input

BP41

I/O

Bidirectional I/O line of Port 4.1 VMI voltage monitor input or T2I

external clock input Timer 2

17

Input

BP42

I/O

Bidirectional I/O line of Port 4.2 T2O Timer 2 output

18

Input

BP43

I/O

Bidirectional I/O line of Port 4.3 SD serial data I/O or INT3 exter-

nal interrupt input

19

Input

BP50

I/O

Bidirectional I/O line of Port 5.0 INT6 external interrupt input

6

Input

BP51

I/O

Bidirectional I/O line of Port 5.1 INT6 external interrupt input

5

Input

BP52

I/O

Bidirectional I/O line of Port 5.2 INT1 external interrupt input

4

Input

BP53

I/O

Bidirectional I/O line of Port 5.3 INT1 external interrupt input

3

Input

BP60

I/O

Bidirectional I/O line of Port 6.0 T3O Timer 3 output

9

Input

BP63

I/O

Bidirectional I/O line of Port 6.3 T3I Timer 3 input

12

Input

OSC1

I

Oscillator input

4-MHz crystal input or 32-kHz

crystal input or external clock in-

put or external trimming resistor

input

7

Input

OSC2

O

Oscillator output

4-MHz crystal output or 32-kHz

crystal output or external clock

input

8

Input

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