ATTINY48-MMHR Atmel, ATTINY48-MMHR Datasheet - Page 212

• Manufacturer Part Number: ATTINY48-MMHR
• Description: MCU AVR 4KB FLASH 12MHZ 28QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY48-MMHR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 12MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 24
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

22.8
The following data is based on simulations and characterisations. Parameters listed in
tion. Symbols refer to
Table 22-7.
Notes:
Figure 22-3. Two-Wire Serial Bus Timing
212
Symbol
V
V
V
V
t
f
t
t
t
t
t
t
t
t
SCL
SDA
SP
SCL
HD:STA
LOW
HIGH
SU:STA
HD:DAT
SU:DAT
SU:STO
BUF
OL
IL
IH
HYS
Two-Wire Serial Interface Characteristics
1. f
t
ATtiny48/88
SU;STA
Parameter
Input Low voltage
Input High voltage
Hysteresis of Schmitt-trigger inputs
Output Low voltage
Spikes suppressed by input filter
SCL clock frequency
Hold time (repeated) START Condition
Low period of SCL clock
High period of SCL clock
Set-up time for repeated START condition
Data hold time
Data setup time
Setup time for STOP condition
Bus free time between STOP and START condition
CK
= CPU clock frequency.
Two-Wire Serial Interface Characteristics
Figure
22-3.
(1)
t
HD;STA
t
of
t
LOW
t
HIGH
t
HD;DAT
Condition
V
V
3mA sink current
f
CK
t
CC
CC
LOW
> max(16f
< 2.7V
2.7V
t
SU;DAT
SCL
, 250kHz)
Table 22-7
0.05 V
0.7 V
Min
-0.5
100
0.6
1.3
0.6
0.6
0.6
1.3
0
0
0
0
0
CC
CC
are not tested in produc-
t
SU;STO
t
r
V
0.3 V
CC
Max
400
0.4
0.9
50
–
–
–
–
–
–
–
–
+ 0.5
8008G–AVR–04/11
CC
t
BUF
Unit
kHz
ns
µs
µs
µs
µs
µs
ns
µs
µs
V
V
V
V