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 

Figure 21. SPI Slave Waveforms (SSCPHA = 0)

SS#

(input)

SCK

(SSCPOL = 0)

(input)

SCK

(SSCPOL = 1)

(input)

MISO

(output)

MOSI

(input)

TSLCH

TSLCL

TCHCH

TCHCX TCLCX

TSLOV

SLAVE MSB OUT

TIVCH TCHIX

TIVCL TCLIX

MSB IN

TCLOV

TCHOV

BIT 6

BIT 6

TCLCH

TCLSH

TCHSH

TSHSL

TCHCL

TCLOX

TCHOX

SLAVE LSB OUT (1)

TSHOX

LSB IN

Note: 1. Not Defined but generally the LSB of the character which has just been received.

Figure 22. SPI Slave Waveforms (SSCPHA = 1)

SS#

(input)

SCK

(SSCPOL = 0)

(input)

SCK

(SSCPOL = 1)

(input)

MISO

(output)

TSLCH

TSLCL

TCHCH

TCHCX TCLCX

TSLOV

(1) SLAVE MSB OUT

TIVCH TCHIX

TIVCL TCLIX

MOSI

(input)

MSB IN

TCHOV

TCLOV

BIT 6

BIT 6

TCLCH

TCLSH

TCHSH

TSHSL

TCHCL

TCHOX

TCLOX

SLAVE LSB OUT

TSHOX

LSB IN

AC Characteristics - EPROM Programming and Verifying

Definition of Symbols

Table 50. EPROM Programming and Verifying Timing Symbol Definitions

Signals

Conditions

A

Address

H

High

E

Enable: mode set on Port 0

L

Low

G

Program

V

Valid

Q

Data Out

S

Supply (VPP)

X

No Longer Valid

Z

Floating

58 AT/TSC8x251G2D

4135F–8051–11/06

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