TINY88-15MZ Atmel, TINY88-15MZ Datasheet - Page 156
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
- Current page: 156 of 246
- Download datasheet (5Mb)
15.9.3
156
ATtiny88 Automotive
TWSR – TWI Status Register
• Bit 5 – TWSTA: TWI START Condition Bit
The application writes the TWSTA bit to one when it desires to become a Master on the 2-wire
Serial Bus. The TWI hardware checks if the bus is available, and generates a START condition
on the bus if it is free. However, if the bus is not free, the TWI waits until a STOP condition is
detected, and then generates a new START condition to claim the bus Master status. TWSTA
must be cleared by software when the START condition has been transmitted.
• Bit 4 – TWSTO: TWI STOP Condition Bit
Writing the TWSTO bit to one in Master mode will generate a STOP condition on the 2-wire
Serial Bus. When the STOP condition is executed on the bus, the TWSTO bit is cleared auto-
matically. In Slave mode, setting the TWSTO bit can be used to recover from an error condition.
This will not generate a STOP condition, but the TWI returns to a well-defined unaddressed
Slave mode and releases the SCL and SDA lines to a high impedance state.
• Bit 3 – TWWC: TWI Write Collision Flag
The TWWC bit is set when attempting to write to the TWI Data Register – TWDR when TWINT is
low. This flag is cleared by writing the TWDR Register when TWINT is high.
• Bit 2 – TWEN: TWI Enable Bit
The TWEN bit enables TWI operation and activates the TWI interface. When TWEN is written to
one, the TWI takes control over the I/O pins connected to the SCL and SDA pins, enabling the
slew-rate limiters and spike filters. If this bit is written to zero, the TWI is switched off and all TWI
transmissions are terminated, regardless of any ongoing operation.
• Bit 1 – Res: Reserved Bit
This bit is a reserved bit and will always read as zero.
• Bit 0 – TWIE: TWI Interrupt Enable
When this bit is written to one, and the I-bit in SREG is set, the TWI interrupt request will be acti-
vated for as long as the TWINT Flag is high.
• Bits 7..3 – TWS: TWI Status
These 5 bits reflect the status of the TWI logic and the 2-wire Serial Bus. The different status
codes are described later in this section. Note that the value read from TWSR contains both the
5-bit status value and the 2-bit prescaler value. The application designer should mask the pres-
caler bits to zero when checking the Status bits. This makes status checking independent of
prescaler setting. This approach is used in this datasheet, unless otherwise noted.
• Bit 2 – Res: Reserved Bit
This bit is reserved and will always read as zero.
Bit
Read/Write
Initial Value
TWS7
R
7
1
TWS6
6
R
1
TWS5
R
5
1
TWS4
R
4
1
TWS3
R
3
1
R
2
–
0
TWPS1
R/W
0
1
TWPS0
R/W
0
0
9157B–AVR–01/10
TWSR
Related parts for TINY88-15MZ
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Switch, Pushbutton, TINY, Sealed, Surface Mount, OFF-MOM., PC TerminalS
Manufacturer:
C&K / ITT / Cannon
Datasheet:
Part Number:
Description:
Switch, Pushbutton, TINY, Sealed, Surface Mount, ON-MOM., PC TerminalS/RT ANGLE
Manufacturer:
C&K / ITT / Cannon
Datasheet:
Part Number:
Description:
Switch, Pushbutton, TINY, Sealed, Surface Mount, OFF-MOM., SUPPORT BRACKET
Manufacturer:
C&K / ITT / Cannon
Datasheet:
Part Number:
Description:
Switch, Pushbutton, TINY, Sealed, Surface Mount, OFF-MOM., PC TerminalS/RT ANGLE
Manufacturer:
C&K / ITT / Cannon
Datasheet:
Part Number:
Description:
TINY TOGGLE SWITCH SPDT RT.ANGLE
Manufacturer:
C&K Components
Datasheet:
Part Number:
Description:
TINY INTEGRATED LI-ION/LI-POLY CHARGE MGNT CONTROLLER, 4.2V VREG
Manufacturer:
Microchip Technology Inc.
Datasheet:
Part Number:
Description:
Tiny High Speed Single Supply Operational Amplifier
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Tiny, Low Power JFET-Input Op Amp
Manufacturer:
Analog Devices
Datasheet:
Part Number:
Description:
Tiny Power On Reset Circuit
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Tiny Digital Thermometer And Thermostat
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
Part Number:
Description:
Tiny Power On Reset Circuit
Manufacturer:
NSC [National Semiconductor]
Datasheet:
Part Number:
Description:
Tiny, Low-Cost, Single/Dual-Input, Fixed-Gain Microphone Amplifiers with Integrated Bias
Manufacturer:
DALLAS [Dallas Semiconductor]
Datasheet:
Part Number:
Description:
TINY CMOS OP AMP
Manufacturer:
NJR
Datasheet:
Part Number:
Description:
Slide Switch,STRAIGHT,SPDT,ON-OFF-ON,WRAP POST Terminal,PCB Hole Count:3
Manufacturer:
C&K Components
Datasheet: