ATTINY167-15MZ Atmel, ATTINY167-15MZ Datasheet - Page 70
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ATTINY167-15MZ
Manufacturer Part Number
ATTINY167-15MZ
Description
MCU AVR 16K FLASH 15MHZ 32-QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY167-15MD.pdf
(283 pages)
Specifications of ATTINY167-15MZ
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, LIN, SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
16
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
For Use With
ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOIC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY167-15MZ
Manufacturer:
ATMEL
Quantity:
670
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9.2.5
70
ATtiny87/ATtiny167
Reading the Pin Value
Table 9-1
Table 9-1.
Note:
Independent of the setting of Data Direction bit DDxn, the port pin can be read through the
PINxn Register bit. As shown in
constitute a synchronizer. This is needed to avoid metastability if the physical pin changes
value near the edge of the internal clock, but it also introduces a delay.
timing diagram of the synchronization when reading an externally applied pin value. The max-
imum and minimum propagation delays are denoted t
Figure 9-4.
Consider the clock period starting shortly after the first falling edge of the system clock. The
latch is closed when the clock is low, and goes transparent when the clock is high, as indi-
cated by the shaded region of the “SYNC LATCH” signal. The signal value is latched when the
system clock goes low. It is clocked into the PINxn Register at the succeeding positive clock
edge. As indicated by the two arrows tpd,max and tpd,min, a single signal transition on the pin
will be delayed between ½ and 1½ system clock period depending upon the time of assertion.
When reading back a software assigned pin value, a nop instruction must be inserted as indi-
cated in
the clock. In this case, the delay tpd through the synchronizer is 1 system clock period.
DDxn
0
0
0
1
1
1. Or port-wise PUDx bit in PORTCR register.
Figure
INSTRUCTIONS
summarizes the control signals for the pin value.
PORTxn
SYSTEM CLK
SYNC LATCH
0
1
1
0
1
Port Pin Configurations
Synchronization when Reading an Externally Applied Pin value
9-5. The out instruction sets the “SYNC LATCH” signal at the positive edge of
PINxn
r17
(in MCUCR)
PUD
X
0
1
X
X
Figure
(1)
XXX
Output
Output
Input
Input
Input
I/O
9-2, the PINxn Register bit and the preceding latch
t
pd, max
0x00
Pull-up
XXX
Yes
No
No
No
No
t
pd, min
pd,max
Comment
Tri-state (Hi-Z)
Pxn will source current if ext. pulled
low.
Tri-state (Hi-Z)
Output Low (Sink)
Output High (Source)
and t
in r17, PINx
pd,min
respectively.
Figure 9-4
0xFF
7728G–AVR–06/10
shows a
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