ATTINY48-AUR Atmel, ATTINY48-AUR Datasheet - Page 200

• Manufacturer Part Number: ATTINY48-AUR
• Description: MCU AVR 4KB FLASH 12MHZ 32TQFP
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY48-AUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 12MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 28
• 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

21.2.13
21.2.14
21.3
200
Serial Programming
ATtiny48/88
Reading Signature Bytes
Reading the Calibration Byte
Figure 21-6. Mapping Between BS1, BS2 and the Fuse and Lock Bits During Read
The algorithm for reading the signature bytes is as follows (see
page 194
The algorithm for reading the calibration byte is as follows (see
page 194
Flash and EEPROM memory arrays can both be programmed using the serial SPI bus while
RESET is pulled to GND. The serial interface consists of pins SCK, MOSI (input) and MISO (out-
put). After RESET is set low, the Programming Enable instruction needs to be executed before
program/erase operations can be executed.
Serial programming signals and connections are illustrated in
ping is listed in
1. A: Load command “0000 1000”
2. B: Load address low byte (0x00 – 0x02)
3. Set OE to “0”, and BS1 to “0”. The selected signature byte can now be read at DATA.
4. Set OE to “1”.
1. A: Load command “0000 1000”.
2. B: Load address low byte, 0x00.
3. Set OE to “0”, and BS1 to “1”. The calibration byte can now be read at DATA.
4. Set OE to “1”.
Fuse Low Byte
Extended Fuse Byte
Fuse High Byte
Lock Bits
for details on command and address loading):
for details on command and address loading):
Table 21-7 on page
BS2
BS2
202.
0
1
0
1
Figure
BS1
“Programming the Flash” on
“Programming the Flash” on
21-7, below. The pin map-
0
1
8008G–AVR–04/11
DATA