ATtiny261-ESMZ datasheet(196/227 Pages) ATMEL

tên linh kiện	ATtiny261-ESMZ

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196

7753C–AVR–07/09

ATtiny261/ATtiny461/ATtiny861

23.8

Serial Programming Characteristics

Figure 23-6. Serial Programming Waveforms

Figure 23-7. Serial Programming Timing

Note:

1. 2 t

CLCL for fck < 12 MHz, 3 tCLCL for fck >= 12 MHz

Table 23-8.

Serial Programming Characteristics, T

A = -40°C to 125°C, VCC = 2.7 - 5.5V

(Unless Otherwise Noted)

Symbol

Parameter

Min

Typ

Max

Units

1/tCLCL

Oscillator Frequency (ATtiny261/461/861V)

MHz

tCLCL

Oscillator Period (ATtiny261/461/861V)

250

1/tCLCL

Oscillator Frequency (ATtiny261/461/861L, VCC =

2.7 - 5.5V)

010

MHz

tCLCL

Oscillator Period (ATtiny261/461/861L, VCC = 2.7 -

5.5V)

100

1/tCLCL

Oscillator Frequency (ATtiny261/461/861, VCC = 4.5V

- 5.5V)

016

MHz

tCLCL

Oscillator Period (ATtiny261/461/861, VCC = 4.5V -

5.5V)

tSHSL

SCK Pulse Width High

2 tCLCL*

tSLSH

SCK Pulse Width Low

2 tCLCL*

tOVSH

MOSI Setup to SCK High

tCLCL

tSHOX

MOSI Hold after SCK High

2 tCLCL

tSLIV

SCK Low to MISO Valid

TBD

MSB

LSB

SERIAL CLOCK INPUT

(SCK)

SERIAL DATA INPUT

(MOSI)

(MISO)

SAMPLE

SERIAL DATA OUTPUT

MOSI

MISO

SCK

OVSH

SHSL

SLSH

SHOX

SLIV

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