AT90USB162-16MUR Atmel, AT90USB162-16MUR Datasheet - Page 220

• Manufacturer Part Number: AT90USB162-16MUR
• Description: IC AVR MCU 16K FLASH 32QFN
• Manufacturer: Atmel
• Series: AVR® 90USBr

Specifications of AT90USB162-16MUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, PS/2, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFN
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SPI, USART, debugWIRE
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 22
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• For Use With: ATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATSTK526 - KIT STARTER FOR AT90USB82/162ATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATSTK525 - KIT STARTER FOR AT90USBAT90USBKEY2 - KIT DEMO FOR AT90USB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Lead Free Status / Rohs Status: Details
• Other names: AT90USB162-16MURTR; AT90USB162-16MUTR; AT90USB162-16MUTR

21. PS/2
21.1
220
Characteristics
AT90USB82/162
The PS/2 pad IO’s characteristics are:
Figure 21-1. USB pad and PS/2 pad multiplexing
• Bit 7:1 – Reserved bits
Do not set these bits.
• Bit 0 – PS2EN : PS/2 Pad Enable
Set this bit to “1” to enable the PS/2 pad.
Set this bit to “0” to disable the PS/2 pad.
For more information about pad driving, see “USB/PS2 Software Output Enable register –
UPOE” on page 194.
Bit
Read/Write
Initial Value
– support 5.5V (min: 4.5V, max: 5.5V)
– open drain type
– Output voltage level threshold, MCU driving low thru a 1kΩ pull-up: VOLmax = 0,7V
– fall time with 1kΩ pull-up and 500pF load: 250ns < Tfall < 1µs
– internal 2.2kΩ to 10kΩ pull-up at Vcc (5V), controlled by firmware.
– High impedance output when disabled.
7
-
R
0
PS/2 Pad
USB Pad
6
-
R
0
5
-
R
0
4
-
R
0
3
-
R
0
2
-
R
0
1
-
R
0
D+ / SCK
D- / SDATA
0
PS2EN
R/W
0
7707F–AVR–11/10
PS2CON