Atmel AT85DVK-07 Especificaciones descargar pdf (Pagina 13)

AT85C51SND3Bx

7632A–MP3–03/06

MMI Interface Table 13. Keypad Controller Signal Description

Table 14. LCD Interface Signal Description

Power Management Table 15. Power Signal Description

TXD O

Transmit Serial Data

TXD outputs the shift clock in serial I/O mode 0 and transmits data in

serial I/O modes 1, 2 and 3.

P3.1

MOSI

RTS O

Request To Send Hardware Handshake Line

Asserted low by hardware when SIO is ready to receive data.

P3.2

INT0

SCK

CTS I

Clear To Send Hardware Handshake Line

Asserted low by external hardware when SIO is allowed to send data.

P3.3

INT1

Signal

Name Type Description

Alternate

Function

Signal

Name

Type Description

Alternate

Function

KIN3:0 I

Keypad Input lines

Holding one of these pins high or low for 24 oscillator periods triggers a

keypad interrupt.

P1.3:0

Signal

Name

Type Description

Alternate

Function

LD7:0 I/O

Display Data Bus

8-bit bidirectional data bus.

P0.7:0

SD7:0

LRD/LDE O

Read Signal/Enable Signal

8080: Read signal asserted low during display read access.

6800: Enable signal asserted high during display access.

P5.0

SRD

LWR/LRW O

Write Signal/Read Write Signal

8080: Write signal asserted low during display write access.

6800: Read/Write signal asserted low/high during display read/write

access

P5.3

SWR

LCS O

Display Chip Select

Select signal asserted low during display access.

P5.1

SCS

LA0/LRS O

Display Address Bit 0/Register Select

Address signal asserted during display access.

P5.2

SA0

Signal

Name

Type Description

Alternate

Function

DCPWR I

DC-DC Power ON Input

Connect DCPWR to V

to start the DC-DC converter.

DCLI PWR

DC-DC Inductance Input

Connect low ESR inductance to DCLI and BVDD.

BVDD PWR

Battery Supply Voltage

Connect this pin to the positive pin of the battery.

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 262 263

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