Datasheet

Physical Interfaces
Intel
®
Quark™ microcontroller D2000
January 2016 Datasheet
Document Number: 333577-002EN 23
Interface Pin Name Type Description
RTC_XTALO Logic output Crystal output for RTC clock. If
RTC XTAL is not connected,
this pin has to be grounded (to
0).
SYS_CLK_OUT Logic Output Divided (1:1, 1:2, 1:4) version of
32MHz system clock output
RTC_CLK_OUT
32.768 kHz RTC clock output
Reset RST_N Analog input Active Low reset input with
Hysteresis. Tie to PVDD for
internal power-on reset.
<0.788V = reset
>1.112V = not reset
RST_N is connected to an
internal comparator which
compares RST_N voltage level
to an internal reference to
assert/deassert internal SOC
reset. There is an internal
mechanism to assert reset if
PVDD is power recycled (power
on reset) irrespective of RST_N
voltage level.
GPIO
GPIO[24:0]
General purpose I/O
I2C
I2C_SCL
Open drain clock
I2C_SDA
Open drain data
PWM
PWM1
PWM Output 1
PWM0
PWM Output 0
UART
UART_A_TXD Logic output UART A single-ended Transmit
data (RS232 or RS485). In
RS485 mode, differential driver
is outside SoC.
UART_A_RXD Logic input UART A single-ended Receive
data (RS232 or RS485). In
RS485 mode, differential
receiver is outside SoC.
UART_A_RTS Logic output UART A Request to send
(RS232)
UART_A_CTS
UART A Clear to send (RS232)
UART_A_DE Logic Output UART A Driver Enable (RS485
mode). Used to control the
differential driver of RS485 in
platform/board. Polarity is
configurable. This is multiplexed
onto UART_A_RTS pin