ATTINY45-15SZ Atmel, ATTINY45-15SZ Datasheet - Page 145

• Manufacturer Part Number: ATTINY45-15SZ
• Description: MCU AVR 4K FLASH 15MHZ 8-SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY45-15SZ

• Package / Case: 8-SOIC (3.9mm Width)
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 6
• Eeprom Size: 256 x 8
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Program Memory Size: 4KB (4K x 8)
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: USI
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

21.8.4
Figure 21-6. High-voltage Serial Programming Waveforms
7598H–AVR–07/09
SDO
PB0
PB1
PB2
PB3
SDI
SCI
SII
Programming the Flash
0
MSB
MSB
MSB
1
The Flash is organized in pages, see
the program data is latched into a page buffer. This allows one page of program data to be pro-
grammed simultaneously. The following procedure describes how to program the entire Flash
memory:
When writing or reading serial data to the ATtiny25/45/85, data is clocked on the rising edge of
the serial clock, see
Figure 21-5. Addressing the Flash which is Organized in Pages
1. Load Command “Write Flash” (see
2. Load Flash Page Buffer.
3. Load Flash High Address and Program Page. Wait after Instr. 3 until SDO goes high for
4. Repeat 2 through 3 until the entire Flash is programmed or until all data has been
5. End Page Programming by Loading Command “No Operation”.
the “Page Programming” cycle to finish.
programmed.
2
PROGRAM MEMORY
PROGRAM
COUNTER
3
PAGE
Figure
PAGE ADDRESS
WITHIN THE FLASH
PCMSB
4
21-6,
PCPAGE
5
Figure 21-7
Table 21-10 on page
Table
6
PAGEMSB
PCWORD
and
21-16).
WORD ADDRESS
WITHIN A PAGE
7
Table 21-17
LSB
INSTRUCTION WORD
LSB
LSB
8
140. When programming the Flash,
PAGE
for details.
9
ATtiny25/45/85
10
PCWORD[PAGEMSB:0]:
00
01
02
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