ATTINY88-15MZ Atmel, ATTINY88-15MZ Datasheet - Page 159

• Manufacturer Part Number: ATTINY88-15MZ
• Description: IC MCU AVR 8B 8KB FLASH 32QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY88-15MZ

• 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 (4K x 16)
• 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: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

15.9.7
9157B–AVR–01/10
TWHSR – TWI High Speed Register
• Bits 7..1 – Res: Reserved Bits
These bits are reserved and will always read zero.
• Bit 0 – TWHS: TWI High Speed Enable
TWI High Speed mode is enabled by writing this bit to one. In this mode the undivided system
clock is selected as TWI clock. See
The TWI High Speed mode requires that the high-speed clock, clk
higher than the I/O clock frequency, clk
frequency clk
been selected as source clock, the user must set the prescaler to scale the system clock (and,
hence, the I/O clock) down to 4 MHz. For more information about clock systems, see
Systems and their Distribution” on page
Bit
Read/Write
Initial Value
I/O
is scaled down by a factor of 2. For example, if the internal 8 MHz oscillator has
R
7
–
0
R
6
–
0
R
5
–
0
Figure 6-1 on page
I/O
26.
. This means the user must make sure the I/O clock
R
4
–
0
R
3
–
0
ATtiny88 Automotive
26.
R
2
–
0
TWIHS
R
1
–
0
, is exactly two times
TWHS
R/W
0
0
TWHSR
“Clock
159