ATTINY25V-10SI Atmel, ATTINY25V-10SI Datasheet - Page 155
ATTINY25V-10SI
Manufacturer Part Number
ATTINY25V-10SI
Description
IC AVR MCU 2K 10MHZ 8SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY25V-10SI
Core Processor
AVR
Core Size
8-Bit
Speed
10MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
6
Program Memory Size
2KB (1K x 16)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Both the Flash and EEPROM memory arrays can 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). See below.
Figure 20-1. Serial Programming and Verify
Notes:
After RESET is set low, the Programming Enable instruction needs to be executed first before
program/erase operations can be executed.
Table 20-10. Pin Mapping Serial Programming
Note:
When programming the EEPROM, an auto-erase cycle is built into the self-timed programming
operation (in the Serial mode ONLY) and there is no need to first execute the Chip Erase
instruction. The Chip Erase operation turns the content of every memory location in both the
Program and EEPROM arrays into 0xFF.
Depending on CKSEL Fuses, a valid clock must be present. The minimum low and high periods
for the serial clock (SCK) input are defined as follows:
Low: > 2 CPU clock cycles for f
High: > 2 CPU clock cycles for f
1. If the device is clocked by the internal Oscillator, it is no need to connect a clock source to the
In
pins dedicated for the internal SPI interface.
Symbol
MOSI
MISO
Table 20-10
SCK
CLKI pin.
above, the pin mapping for SPI programming is listed. Not all parts use the SPI
MOSI
MISO
SCK
Pins
PB0
PB1
PB2
ck
ck
< 12 MHz, 3 CPU clock cycles for f
< 12 MHz, 3 CPU clock cycles for f
RESET
GND
(1)
I/O
O
I
I
VCC
+1.8 - 5.5V
ck
ck
Serial Data out
Serial Data in
Description
Serial Clock
>= 12 MHz
>= 12 MHz
155
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