ATTINY461-20SUR Atmel, ATTINY461-20SUR Datasheet - Page 193

• Manufacturer Part Number: ATTINY461-20SUR
• Description: MCU AVR 4KB FLASH 20MHZ 20SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY461-20SUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

19.7
2588E–AVR–08/10
Serial Programming Characteristics
Figure 19-4. Serial Programming Waveforms
Figure 19-5. Serial Programming Timing
Table 19-8.
Note:
SERIAL DATA OUTPUT
SERIAL CLOCK INPUT
Symbol
1/t
1/t
t
t
t
t
t
t
SERIAL DATA INPUT
t
OVSH
SHOX
CLCL
CLCL
SHSL
SLSH
SLIV
CLCL
CLCL
1. 2 t
Parameter
Oscillator Frequency (ATtiny261V/461V/861V)
Oscillator Period (ATtiny261V/461V/861V)
Oscillator Frequency
(ATtiny261/461/861, V
Oscillator Period
(ATtiny261/461/861, V
SCK Pulse Width High
SCK Pulse Width Low
MOSI Setup to SCK High
MOSI Hold after SCK High
SCK Low to MISO Valid
SAMPLE
MOSI
MISO
CLCL
SCK
Serial Programming Characteristics, T
(Unless Otherwise Noted)
(MOSI)
(MISO)
(SCK)
for f
ck
< 12 MHz, 3 t
t
OVSH
MSB
MSB
CC
CC
= 4.5 - 5.5V)
= 4.5 - 5.5V)
CLCL
t
for f
SHSL
ck
>= 12 MHz
A
t
= -40°C to +85°C, V
SHOX
2 t
2 t
2 t
t
CLCL
CLCL
Min
250
CLCL
50
CLCL
0
0
(1)
(1)
t
SLSH
Typ
CC
t
SLIV
= 1.8 - 5.5V
Max
100
20
4
LSB
LSB
Units
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
193