ATTINY87-15SZ Atmel, ATTINY87-15SZ Datasheet - Page 234
ATTINY87-15SZ
Manufacturer Part Number
ATTINY87-15SZ
Description
MCU AVR 8K FLASH 15MZ 32-SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY167-15MD.pdf
(283 pages)
Specifications of ATTINY87-15SZ
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, LIN, SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
16
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
20-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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21.7.5
234
ATtiny87/ATtiny167
Programming the EEPROM
PAGEL / BS1
RESET +12V
Figure 21-3. Programming the Flash Waveforms
Note:
The EEPROM is organized in pages, see
EEPROM, the program data is latched into a page buffer. This allows one page of data to be
programmed simultaneously. The programming algorithm for the EEPROM data memory is as
follows (refer to
Data loading):
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 A through E until the entire buffer is filled.
L: Program EEPROM page
XA1 / BS2
RDY/BSY
1. Set BS1 to “0”.
2. Give WR a negative pulse. This starts programming of the EEPROM page. RDY/BSY
3. Wait until to RDY/BSY goes high before programming the next page (See
XTAL1
DATA
XA0
WR
OE
goes low.
for signal waveforms).
1. “XX” is don’t care. The letters refer to the programming description above.
0x10
A
“Programming the Flash” on page 232
ADDR. LOW
B
DATA LOW
C
DATA HIGH
D
b
”.
E
XX
ADDR. LOW
B
Table 21-8 on page
DATA LOW
C
(1)
F
DATA HIGH
D
for details on Command, Address and
XX
E
228. When programming the
ADDR. HIGH
G
H
XX
Figure 21-4
7728G–AVR–06/10
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