AT80251G2D-3CSUM(2006) View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT80251G2D-3CSUM
(Rev.:2006)

8/16-bit Microcontroller with Serial Communication Interfaces

Atmel Corporation 

AT/TSC8x251G2D

Waveforms

Figure 19. SPI Master Waveforms (SSCPHA = 0)

Note:

SS#(1)

(output)

SCK

(SSCPOL = 0)

(output)

SCK

(SSCPOL = 1)

(output)

MISO

(input)

MOSI

(output) Port Data

1. SS# handled by software.

TCHCH

TCHCX TCLCX

TIVCH TCHIX

TIVCL TCLIX

MSB IN

MSB OUT

BIT 6

TCLOV

TCHOV

BIT 6

TCLCH

TCHCL

LSB IN

LSB OUT

Figure 20. SPI Master Waveforms (SSCPHA = 1)

TCLOX

TCHOX

Port Data

Note:

SS#(1)

(output)

SCK

(SSCPOL = 0)

(output)

SCK

(SSCPOL = 1)

(output)

TCHCH

TCHCX TCLCX

TIVCH TCHIX

TIVCL TCLIX

MISO

(input)

MOSI

(output)

Port Data

MSB IN

TCLOV

TCHOV

MSB OUT

1. Not Defined but normally MSB of character just received.

BIT 6

TCLOX

TCHOX

BIT 6

TCLCH

TCHCL

LSB IN

LSB OUT

Port Data

57

4135F–8051–11/06

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