ATTINY48-MMHR Atmel, ATTINY48-MMHR Datasheet - Page 212
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ATTINY48-MMHR
Manufacturer Part Number
ATTINY48-MMHR
Description
MCU AVR 4KB FLASH 12MHZ 28QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY48-MU.pdf
(302 pages)
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
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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
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