ATTINY167-SU Atmel, ATTINY167-SU Datasheet - Page 18

• Manufacturer Part Number: ATTINY167-SU
• Description: IC MCU AVR 16K FLASH 20SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY167-SU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• 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): 1.8 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SOIC (0.300", 7.50mm Width)
• Core: AVR8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6. Errata
6.1
6.1.1
6.1.2
6.2
6.2.1
6.2.2
6.3
18
Errata ATtiny87
Errata ATtiny167
Errata Description
ATtiny87/ATtiny167
Rev. C
Rev. A - B
Rev. C
Rev. A - B
The revision letter in this section refers to the revision of the ATtiny87 device.
Not sampled.
The revision letter in this section refers to the revision of the ATtiny167 device.
Not sampled.
1. Gain control of the crystal oscillator.
• Gain control of the crystal oscillator.
• ‘Disable Clock Source’ command remains enabled.
• Gain control of the crystal oscillator.
• ‘Disable Clock Source’ command remains enabled.
The crystal oscillator (0.4 -> 16 MHz) doesn’t latch its gain control (CKSEL/CSEL[2:0]
bits):
a. The ‘Recover System Clock Source’ command doesn’t returns CSEL[2:0] bits.
b. The gain control can be modified on the fly if CLKSELR changes.
Problem fix / workaround .
a. No workaround.
b. As soon as possible, after any CLKSELR modification, re-write the appropriate crystal
Code example:
; Select crystal oscillator ( 16MHz crystal, fast rising power)
; Enable clock source (crystal oscillator)
;
oscillator setting (CSEL[3]=1 and CSEL[2:0] / CSUT[1:0] bits) in CLKSELR.
Clock source switch
ldi
sts
ldi
ldi
sts
sts
ldi
sts
temp1,((0x0F<<CSEL0)|(0x02<<CSUT0))
CLKSELR, temp1
temp2,(1<<CLKCCE)
temp3,(0x02<<CLKC0)
CLKCSR,temp2
CLKCSR,temp3
temp3,(0x04<<CLKC0)
CLKCSR,temp2
; CSEL = "0010"
; Enable CLKCSR register access
; Enable crystal oscillator clock
; CSEL = "0100"
; Enable CLKCSR register access
8265BS–AVR–09/10