T89C5115-RATIM datasheet(38/113 Pages) ATMEL

No. de pieza	T89C5115-RATIM

Descripción Electrónicos	Low Pin Count 8-bit Microcontroller with A/D Converter and 16 KBytes Flash Memory

PDF	113 Pages

Scroll/Zoom	100%

Fabricante Electrónico	ATMEL [ATMEL Corporation]

Página de inicio	http://www.atmel.com

Logo

38 / 113 page

AT89C5115

4128G–8051–02/08

Figure 16. Hardware Programming Procedure

Reading the Flash Spaces

User

The following procedure is used to read the User space:

•

Read one byte in Accumulator by executing MOVC A,@A+DPTR with A+DPTR is

the address of the code byte to read.

Note:

FCON must be cleared (00h) when not used.

Extra Row

The following procedure is used to read the Extra Row space and is summarized in

Figure 17:

•

Map the Extra Row space by writing 02h in FCON register.

•

Read one byte in Accumulator by executing MOVC A,@A+DPTR with A= 0 &

DPTR= FF80h to FFFFh.

•

Clear FCON to unmap the Extra Row.

Hardware Security Byte

The following procedure is used to read the Hardware Security Byte and is sum-

marized in Figure 17:

•

Map the Hardware Security space by writing 04h in FCON register.

•

Read the byte in Accumulator by executing MOVC A,@A+DPTR with A= 0 &

DPTR= 0000h.

•

Clear FCON to unmap the Hardware Security Byte.

Flash Spaces

Programming

Save & Disable IT

EA = 0

Launch Programming

FCON = 54h

FCON = A4h

End Programming

RestoreIT

FBusy

Cleared?

Clear Mode

FCON = 00h

Data Load

DPTR = 00h

ACC = Data

Exec: MOVX @DPTR, A

FCON = 0Ch

Save & Disable IT

EA = 0

End Loading

Restore IT

T89C5115-RATIM Datasheet(PDF) 38 Page - ATMEL Corporation

T89C5115-RATIM Datasheet(HTML) 38 Page - ATMEL Corporation

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 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Descarga

Enlace URL