AT89C5121 View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT89C5121

8-bit Microcontroller with Multiprotocol Smart Card Interface

Atmel Corporation 

Pin Description

Figure 2. 24-pin SSOP Pinout

CVSS 1

LI 2

CVCC 3

P1.5/CRST 4

P1.4/CCLK 5

P1.3/CC4 6

P1.2/CPRES 7

P1.1/CC8 8

P1.0/CIO 9

RST 10

XTAL2 11

XTAL1 12

Figure 3. QFN32 Pinout

A/T8xC5121

24 VCC

23 EVCC

22 DVCC

21 VSS

20 P3.0/RxD

19 P3.1/TxD

18 P3.3/INT1/OE

17 P3.4/T0

16 P3.2/INT0

15 P3.5/CIO1/T1

14 P3.6/CCLK1/LED0

13 P3.7/CRST1/LED1

CVcc

P1.5/CRST

P1.4/CCLK

P1.3/CC4

P1.2/CPRES

P1.1/CC8

P1.0/CIO

RST

32 31 30 29 28 27 26 25

1

24

2

23

3

22

4

5

QFN32

21

20

6

19

7

18

8

17

9 10 11 12 13 14 15 16

Vss

Vss

P3.0/RxD

P3.1/TxD

P3.3/INT1/OE

P3.4/T0

P3.2/INT0

P3.5/CIO1/T1

3

4164G–SCR–07/06

Share Link: