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ZEUS Technical Manual Power and power management
© 2007 Eurotech Ltd Issue D 68
Peripheral devices power management
The following table gives the estimated power consumption of on-board peripherals:
Low power mode
On-board
peripheral
Maximum power
consumption Minimum consumption Operating mode
Quad UART 66mW (20mA@3.3V) 10mW (3mA@3.3V) Idle
Ethernet 2x
DM9000A
607mW (2x92mA@3.3V) 46mW (2x7mA@3.3V) Power-down
CAN MCP2515 50mW (10mA@5V) 0.025mW (5uA@5V) Sleep
CAN transceiver 375mW (75mA@5V) 1.8mW (200uA@5V) Standby
AC’97 Codec
WM9712L
80mW 0.001mW OFF
Boomer Amp
LM4880
30mW (6mA@5V) 0.025mW (5uA@5V) Shut-down
SDRAM x4 2640mW (4x200mA@3.3V) 26.4mW (4x2mA@3.3V) Power-down
Flash 165mW (50mA@3.3V) 0.015mW (5uA@3.3V) Standby
SRAM 72mW (22mA@3.3V) 0.001mW (3uA@3.3V) Standby
RS485 6.6mW (2mA@3.3V) 5mW (1.5mA@3.3V) Disable
CPLD x2 66mW (2x10mA@3.3V) 20mW (2x3mA@3.3V) Idle
LVDS transceiver 165mW (50mA@3.3V) 0.17mW (55uA@3V) Power-down
I/O expander x2 1.6mW (2x120uA@3.3V) 0.02mW (2x3uA@3.3V) Idle
RTC 0.4mW (120uA@3.3V) 0.012mW (4uA@3.3V) Idle
Temperature
sensor
3.3mW (1mA@3.3V) 0.010mW (3.5uA@3.3V) Shut-down
Config PROM 3.3mW (1mA@3.3V) 0.003mW (1uA@3.3V) Standby
Total 4.5W 102mW
External peripheral devices include CF+ card (1.5W max), two USB devices (5W max),
add-on PC/104 cards (5W max), wireless modem (8.5W peak), LCD and Inverter (4W
max), GPS module (50mW max), ZigBee module (30mW max), SDIO (350mW max)
and Quick Capture camera (50mW max).