ATtiny88 Atmel Corporation, ATtiny88 Datasheet - Page 197
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ATtiny88
Manufacturer Part Number
ATtiny88
Description
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
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21.2.6
8008H–AVR–04/11
Reading the Flash
programmed simultaneously. The programming algorithm for the EEPROM data memory is as
follows (refer to
Data loading):
EEPROM programming waveforms are illustrated in
and letters refer to the programming steps described above.
Figure 21-4. Programming the EEPROM Waveforms
The algorithm for reading the Flash memory is as follows (see
194
RESET +12V
• A: Load command “0001 0001”
• G: Load address high byte (0x00 – 0xFF)
• B: Load address low byte (0x00 – 0xFF)
• C: Load data (0x00 – 0xFF)
• E: Latch data (give PAGEL a positive pulse)
• K: Repeat steps B, C, and E until the entire buffer is filled
• L: Program EEPROM page:
• A: Load command “0000 0010”
• G: Load address high byte (0x00 – 0xFF)
• B: Load address low byte (0x00 – 0xFF)
• Set OE to “0”, and BS1 to “0”. The Flash word low byte can now be read at DATA
RDY/BSY
PAGEL
for details on command and address loading):
DATA
CLKI
XA1
XA0
BS1
BS2
– Set BS1 to “0”
– Give WR a negative pulse. This starts programming of the EEPROM page.
– Wait until to RDY/BSY goes high before programming the next page (See
WR
OE
RDY/BSY goes low
4
for signal waveforms)
0x11
A
“Programming the Flash” on page 194
ADDR. HIGH
G
ADDR. LOW
B
DATA
C
XX
E
ADDR. LOW
B
Figure
for details on Command, Address and
DATA
C
K
21-4, where XX means “don’t care”
“Programming the Flash” on page
XX
E
ATtiny48/88
L
Figure 21-
197