ATtiny88 Atmel Corporation, ATtiny88 Datasheet - Page 199

• Manufacturer Part Number: ATtiny88
• Manufacturer: Atmel Corporation

Specifications of ATtiny88

• Flash (kbytes): 8 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 12 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 28
• Ext Interrupts: 28
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 64
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

21.2.11
21.2.12
8008H–AVR–04/11
Programming the Lock Bits
Reading Fuse and Lock Bits
Figure 21-5. Programming the FUSES Waveforms
The algorithm for programming the lock bits is as follows (see
194
Lock bits can only be cleared by executing Chip Erase.
The algorithm for reading fuse and lock bits is as follows (see
194
Fuse and lock bit mapping is illustrated in
RESET +12V
• A: Load command “0010 0000”
• C: Load data low byte. Bit n = “0” programs the Lock bit. If LB1 and LB2 have been
• Give WR a negative pulse and wait for RDY/BSY to go high
• A: Load command “0000 0100”
• Set OE to “0”, BS2 to “0” and BS1 to “0”. Low fuse bits can now be read at DATA (“0” means
• Set OE to “0”, BS2 to “1” and BS1 to “1”. High fuse bits can now be read at DATA (“0” means
• Set OE to “0”, BS2 to “1”, and BS1 to “0”. Extended fuse bits can now be read at DATA (“0”
• Set OE to “0”, BS2 to “0” and BS1 to “1”. Lock bits can now be read at DATA (“0” means
• Set OE to “1”
RDY/BSY
programmed, it is not possible to program the Lock Bits by any External Programming mode
programmed)
programmed)
means programmed)
programmed)
PAGEL
for details on command and data loading):
for details on command loading):
CLKI
DATA
XA1
XA0
BS1
BS2
WR
OE
0x40
A
DATA
C
Write Fuse Low byte
XX
0x40
A
Figure
DATA
C
21-6, below.
Write Fuse high byte
XX
“Programming the Flash” on page
“Programming the Flash” on page
0x40
A
ATtiny48/88
DATA
C
Write Extended Fuse byte
XX
199