ATTINY45-20SUR Atmel, ATTINY45-20SUR Datasheet - Page 175

• Manufacturer Part Number: ATTINY45-20SUR
• Description: MCU AVR 4KB FLASH 20MHZ 8SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY45-20SUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 6
• 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 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ATTINY45-20SU SL383; ATTINY45-20SU SL383; ATTINY45-20SU-SL383; Q4272203

21.8
2586M–AVR–07/10
Serial Programming Characteristics
Figure 21-4. Serial Programming Waveforms
Figure 21-5. Serial Programming Timing
Table 21-11. Serial Programming Characteristics, T
Note:
Symbol
1/t
1/t
1/t
t
t
t
t
t
t
t
t
OVSH
SHOX
CLCL
CLCL
CLCL
SHSL
SLSH
SLIV
CLCL
CLCL
CLCL
SERIAL DATA OUTPUT
SERIAL CLOCK INPUT
SERIAL DATA INPUT
1. 2 t
Parameter
Oscillator Frequency (V
Oscillator Period (V
Oscillator Frequency (V
Oscillator Period (V
Oscillator Frequency (V
Oscillator Period (V
SCK Pulse Width High
SCK Pulse Width Low
MOSI Setup to SCK High
MOSI Hold after SCK High
SCK Low to MISO Valid
CLCL
(Unless Otherwise Noted)
SAMPLE
(MOSI)
(MISO)
for f
(SCK)
MOSI
MISO
SCK
ck
< 12 MHz, 3 t
t
OVSH
CC
CC
CC
MSB
MSB
= 1.8 - 5.5V)
= 2.7 - 5.5V)
= 4.5V - 5.5V)
CC
CC
CC
CLCL
= 1.8 - 5.5V)
= 2.7 - 5.5V)
= 4.5V - 5.5V)
for f
t
SHSL
ck
>= 12 MHz
A
t
SHOX
= -40°C to +85°C, V
2 t
2 t
2 t
t
Min
250
100
CLCL
t
50
CLCL*
CLCL*
CLCL
SLSH
0
0
0
t
SLIV
Typ
CC
= 1.8 - 5.5V
LSB
LSB
Max
100
10
20
4
Units
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
175