ATTINY48-MMH Atmel, ATTINY48-MMH Datasheet - Page 12
![MCU AVR 4KB FLASH 12MHZ 28-VQFN](/photos/12/32/123209/28m1-vqfn_sml.jpg)
ATTINY48-MMH
Manufacturer Part Number
ATTINY48-MMH
Description
MCU AVR 4KB FLASH 12MHZ 28-VQFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY48-MMH
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 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
For Use With
ATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVR
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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4.7
4.8
12
Instruction Execution Timing
Reset and Interrupt Handling
ATtiny48/88
AVR devices all data memory can be addressed using SPL, only. In this case, the SPH register
is not implemented.
The stack pointer must be set to point above the I/O register areas, the minimum value being the
lowest address of SRAM. See
This section describes the general access timing concepts for instruction execution. The AVR
CPU is driven by the CPU clock clk
chip. No internal clock division is used.
Figure 4-4
vard architecture and the fast-access Register File concept. This is the basic pipelining concept
to obtain up to 1 MIPS per MHz with the corresponding unique results for functions per cost,
functions per clocks, and functions per power-unit.
Figure 4-4.
Figure 4-5
operation using two register operands is executed, and the result is stored back to the destina-
tion register.
Figure 4-5.
The AVR provides several different interrupt sources. These interrupts and the separate Reset
Vector each have a separate program vector in the program memory space. All interrupts are
assigned individual enable bits which must be written logic one together with the Global Interrupt
Enable bit in the Status Register in order to enable the interrupt. Depending on the Program
Counter value, interrupts may be automatically disabled when Lock Bits LB2 or LB1 are pro-
Register Operands Fetch
2nd Instruction Execute
3rd Instruction Execute
1st Instruction Execute
ALU Operation Execute
2nd Instruction Fetch
3rd Instruction Fetch
4th Instruction Fetch
1st Instruction Fetch
Total Execution Time
Result Write Back
shows the internal timing concept for the Register File. In a single clock cycle an ALU
shows the parallel instruction fetches and instruction executions enabled by the Har-
The Parallel Instruction Fetches and Instruction Executions
Single Cycle ALU Operation
clk
clk
CPU
CPU
Table 5-2 on page
CPU
T1
T1
, directly generated from the selected clock source for the
18.
T2
T2
T3
T3
8008G–AVR–04/11
T4
T4
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