T89C5115 datasheet(9/105 Pages) ATMEL

Part #	T89C5115

Description	Low Pin Count 8-bit MCU with A/D Converter and 16-Kbytes of Flash Memory

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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9

T89C5115

4128A–8051–04/02

SFR Mapping

The Special Function Registers (SFRs) of the T89C5115 fall into the following

categories:

Table 3. C51CoreSFRs

Mnemonic

Add

Name

765432

10

ACC

E0h

Accumulator

–––––

–––

B

F0h

B Register

–––––

–––

PSW

D0h

Program Status Word

CY

AC

F0

RS1

RS0

OV

F1

P

SP

81h

Stack Pointer

–––––

–––

DPL

82h

Data Pointer Low

byte

LSB of DPTR

–––––

–––

DPH

83h

Data Pointer High

byte

MSB of DPTR

–––––

–––

Table 4. I/O Port SFRs

Mnemonic

Add

Name

765432

10

P1

90h

Port 1

–––––

–––

P2

A0h

Port 2 (x2)

–––––

–––

P3

B0h

Port 3

–––––

–––

P4

C0h

Port 4 (x2)

–––––

–––

Table 5. Timers SFRs

Mnemonic

Add

Name

765432

10

TH0

8Ch

Timer/Counter 0 High

byte

–––––

–––

TL0

8Ah

Timer/Counter 0 Low

byte

–––––

–––

TH1

8Dh

Timer/Counter 1 High

byte

–––––

–––

TL1

8Bh

Timer/Counter 1 Low

byte

–––––

–––

TH2

CDh

Timer/Counter 2 High

byte

–––––

–––

TL2

CCh

Timer/Counter 2 Low

byte

–––––

–––

TCON

88h

Timer/Counter 0 and

1 control

TF1

TR1

TF0

TR0

IE1

IT1

IE0

IT0

TMOD

89h

Timer/Counter 0 and

1 Modes

GATE1

C/T1#

M11

M01

GATE0

C/T0#

M10

M00

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