IMX51 Datasheet, PDF (20/184 Pages) Freescale Semiconductor, Inc – i.MX51 Applications Processors for Consumer and Industrial Products

Electrical Characteristics
Table 11. i.MX51 Stop Mode Current and Power Consumption (continued)¹
Mode
Condition
Supply
Nominal Unit
Stop Mode
• External reference clocks
enabled
VDDGP = 1.1 V, VCC = 1.225 V, VDDA = 1.2 V
All PLLs off, all CCM-generated clocks off
CKIL input on with 32 kHz signal present
VDDGP
VCC
50
mA
2
• No power gating for ARM and _{All modules disabled}
processing units
USBPHY PLL off
• HPM voltage
External (MHz) crystal and on-chip oscillator
VDDA
1.15
NVCC_OSC
1.5
powered and generating reference clock
No external resistive loads that cause current flow
Total
63
mW
TA = 25°C
1 _{The data in this table will be finalized after the complete characterization of the silicon.}
3.1.2 USB PHY Current Consumption
Table 12. USB PHY Current Consumption
Parameter
Analog Supply
VDDA33 (3.3 V)
Analog Supply
NVCC_USBPHY (2.5 V)
Digital Supply
VCC (1.2 V)
VDDA33 + NVCC_USBPHY +VCC
Conditions
Typical @ 25 °C
Max
Unit
RX
5.5
Full Speed
TX
7
RX
5
High Speed
TX
5
6
8
mA
6
6
RX
6.5
Full Speed
TX
6.5
RX
12
High Speed
TX
21
RX
6
Full Speed
TX
6
RX
6
High Speed
TX
6
Suspend
50
7
7
mA
13
22
7
7
mA
7
7
100
μA
3.2 Supply Power-Up/Power-Down Requirements and Restrictions
The system design must comply with the power-up and power-down sequence guidelines as described in
this section to guarantee reliable operation of the device. Any deviation from these sequences may result
in the following situations:
• Excessive current during power-up phase
• Prevention of the device from booting
• Irreversible damage to the i.MX51 processor (worst-case scenario)
i.MX51 Applications Processors for Consumer and Industrial Products, Rev. 1
20
Freescale Semiconductor
Preliminary—Subject to Change Without Notice