ATTINY13A-SS7R Atmel, ATTINY13A-SS7R Datasheet - Page 21
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ATTINY13A-SS7R
Manufacturer Part Number
ATTINY13A-SS7R
Description
IC MCU AVR 1K FLASH 8SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY13A-SSH.pdf
(176 pages)
Specifications of ATTINY13A-SS7R
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
6
Program Memory Size
1KB (512 x 16)
Program Memory Type
FLASH
Eeprom Size
64 x 8
Ram Size
64 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
8-SOIC (0.154", 3.90mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Connectivity
-
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5.5.3
8126E–AVR–07/10
EECR – EEPROM Control Register
• Bit 7 – Res: Reserved Bit
This bit is reserved for future use and will always read as 0 in ATtiny13A. For compatibility with
future AVR devices, always write this bit to zero. After reading, mask out this bit.
• Bit 6 – Res: Reserved Bit
This bit is reserved in the ATtiny13A and will always read as zero.
• Bits 5:4 – EEPM[1:0]: EEPROM Programming Mode Bits
The EEPROM Programming mode bits setting defines which programming action that 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 to split the Erase and Write operations in two different
operations. The Programming times for the different modes are shown in
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 5-1.
• Bit 3 – EERIE: EEPROM Ready Interrupt Enable
Writing EERIE to one enables the EEPROM Ready Interrupt if the I-bit in SREG is set. Writing
EERIE to zero disables the interrupt. The EEPROM Ready Interrupt generates a constant inter-
rupt when Non-volatile memory is ready for programming.
• Bit 2 – EEMPE: EEPROM Master Program Enable
The EEMPE bit determines whether writing EEPE to 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 zero, setting EEPE will have no effect. When EEMPE has been
written to one by software, hardware clears the bit to zero after four clock cycles.
• Bit 1 – EEPE: EEPROM Program Enable
The EEPROM Program Enable Signal 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 one before a logical one is written to EEPE, otherwise no
EEPROM write takes 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.
Bit
0x1C
Read/Write
Initial Value
EEPM1
0
0
1
1
EEPM0
EEPROM Mode Bits
0
1
0
1
R
7
–
0
Programming
R
6
–
0
3.4 ms
1.8 ms
1.8 ms
Time
–
EEPM1
R/W
X
5
Operation
Erase and Write in one operation (Atomic Operation)
Erase Only
Write Only
Reserved for future use
EEPM0
R/W
X
4
EERIE
R/W
3
0
EEMPE
R/W
2
0
EEPE
R/W
X
1
Table 5-1 on page
EERE
R/W
0
0
EECR
21.
21
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