ATTINY24-15MZ Atmel, ATTINY24-15MZ Datasheet - Page 23
![MCU AVR 2K FLASH 15MHZ 20-QFN](/photos/12/32/123214/20-qfn-pc_sml.jpg)
ATTINY24-15MZ
Manufacturer Part Number
ATTINY24-15MZ
Description
MCU AVR 2K FLASH 15MHZ 20-QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY24-15MZ.pdf
(225 pages)
Specifications of ATTINY24-15MZ
Package / Case
20-QFN Exposed Pad
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Speed
16MHz
Number Of I /o
12
Eeprom Size
128 x 8
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
128 x 8
Program Memory Size
2KB (2K x 8)
Data Converters
A/D 8x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Connectivity
USI
Core Size
8-Bit
Cpu Family
ATtiny
Device Core
AVR
Device Core Size
8b
Frequency (max)
16MHz
Interface Type
SPI/UART
Total Internal Ram Size
128Byte
# I/os (max)
12
Number Of Timers - General Purpose
2
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 125C
Operating Temperature Classification
Automotive
Mounting
Surface Mount
Pin Count
20
Package Type
QFN EP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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7701D–AVR–09/10
• Bit 7 – Res: Reserved Bit
This bit is reserved for future use, and will always read as 0 in Atmel
compatibility with future AVR
mask out this bit.
• Bit 6 – Res: Reserved Bit
This bit is reserved in the Atmel ATtiny24/44/84 and will always read as zero.
• Bits 5, 4 – EEPM1 and EEPM0: EEPROM Mode Bits
The EEPROM programming mode bits define which programming action will be triggered
when writing EEPE. It is possible to program data in one atomic operation (erase the old value
and program the new value) or split the erase and write operations into two separate opera-
tions. The programming times for the different modes are shown in Table 6-1. While EEPE is
set, any write to EEPMn will be ignored. During reset, the EEPMn bits will be reset to 0b00
unless the EEPROM is busy programming.
Table 6-1.
• Bit 3 – EERIE: EEPROM Ready Interrupt Enable
Writing EERIE to logical one enables the EEPROM ready interrupt if the I-bit in SREG is set.
Writing EERIE to logical zero disables the interrupt. The EEPROM ready interrupt generates a
constant interrupt when non-volatile memory is ready for programming.
• Bit 2 – EEMPE: EEPROM Master Program Enable
The EEMPE bit determines whether writing EEPE to logical one will have effect or not. When
EEMPE is set, setting EEPE within four clock cycles will program the EEPROM at the selected
address. If EEMPE is logical zero, setting EEPE will have no effect. When EEMPE has been
written to logical one by software, hardware clears the bit to logical zero after four clock cycles.
• Bit 1 – EEPE: EEPROM Program Enable
The EEPROM program enable bit, EEPE, is the programming enable signal to the EEPROM.
When EEPE is written, the EEPROM will be programmed according to the EEPMn bits setting.
The EEMPE bit must be written to logical one before a logical one is written to EEPE, other-
wise no EEPROM write will take place. When the write access time has elapsed, the EEPE bit
is cleared by hardware. When EEPE has been set, the CPU is halted for two cycles before the
next instruction is executed.
EEPM1
0
0
1
1
EEPM0
EEPROM Mode Bits
0
1
0
1
Programming
Atmel ATtiny24/44/84 [Preliminary]
3.4ms
1.8ms
1.8ms
Time
–
®
devices, always write this bit to a logical zero. After reading,
Operation
Erase and Write in one operation (Atomic Operation)
Erase Only
Write Only
Reserved for future use
®
ATtiny24/44/84. For
23
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