TINY88-15MZ Atmel, TINY88-15MZ Datasheet - Page 158
TINY88-15MZ
Manufacturer Part Number
TINY88-15MZ
Description
MCU AVR 8KB FLASH 12MHZ 32-QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.TINY88-15MZ.pdf
(246 pages)
Specifications of TINY88-15MZ
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI
Peripherals
Brown-out Detect/Reset, POR, WDT
Number Of I /o
28
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Eeprom Size
64 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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15.9.5
15.9.6
158
ATtiny88 Automotive
TWAR – TWI (Slave) Address Register
TWAMR – TWI (Slave) Address Mask Register–
The TWAR should be loaded with the 7-bit Slave address (in the seven most significant bits of
TWAR) to which the TWI will respond when programmed as a Slave Transmitter or Receiver,
and not needed in the Master modes. In multi master systems, TWAR must be set in masters
which can be addressed as Slaves by other Masters.
The LSB of TWAR is used to enable recognition of the general call address (0x00). There is an
associated address comparator that looks for the slave address (or general call address if
enabled) in the received serial address. If a match is found, an interrupt request is generated.
• Bits 7..1 – TWA: TWI (Slave) Address Register
These seven bits constitute the slave address of the TWI unit.
• Bit 0 – TWGCE: TWI General Call Recognition Enable Bit
If set, this bit enables the recognition of a General Call given over the 2-wire Serial Bus.
• Bits 7..1 – TWAM: TWI Address Mask
The TWAMR can be loaded with a 7-bit Salve Address mask. Each of the bits in TWAMR can
mask (disable) the corresponding address bits in the TWI Address Register (TWAR). If the mask
bit is set to one then the address match logic ignores the compare between the incoming
address bit and the corresponding bit in TWAR.
detail.
Figure 15-22. TWI Address Match Logic, Block Diagram
• Bit 0 – Res: Reserved Bit
These bits are reserved and will always read zero.
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
TWAMR0
Address
TWAR0
Bit 0
TWA6
R/W
R/W
7
1
7
0
TWA5
R/W
R/W
6
1
6
0
Address Bit Comparator 6..1
TWA4
R/W
R/W
Address Bit Comparator 0
5
1
5
0
TWAM[6:0]
TWA3
R/W
R/W
4
0
4
1
Figure 15-22
TWA2
R/W
R/W
3
1
3
0
TWA1
R/W
R/W
shown the address match logic in
2
0
2
1
TWA0
R/W
R/W
1
1
0
1
TWGCE
Address
R/W
R
Match
0
–
0
0
0
9157B–AVR–01/10
TWAMR
TWAR
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