PXD20 Datasheet, PDF (8/130 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

Overview
SoC features
Table 2. Operating mode summary¹
Clock sources
Wake-up time²
RUN
On OP OP OP On OP OP On OP On OP — — FP — — — — — — —
3
HALT
CG OP OP OP On OP OP On OP On OP OP OP FP — — — — — — TBD
3
STOP
CG CG CG OP On CG CG OP OP On OP OP OP LP 350 µs 4 µs 20 µs 1 ms 200 µs — 24 µs
3
STANDBY Off Off Off 64 Off Off Off OP OP OP OP OP OP LP 350 µs 8 µs 100 µs 1 ms 200 µs Var 28 µs
KB⁴
Off Off Off 8 Off Off Off OP OP OP OP OP OP LP 200 µs 8 µs 100 µs 1 ms 200 µs Var 28 µs
KB⁵
POR
500 µs 8 µs 100 µs 1 ms 200 µs
BAM
6
1 _{Table Key:}
On—Powered and clocked
OP—Optionally configurable to be enabled or disabled (clock gated)
CG—Clock Gated, Powered but clock stopped
Off-—Powered off and clock gated
FP—VREG Full Performance mode
LP—VREG Low Power mode, reduced output capability of VREG but lower power consumption
Var—Variable duration, based on the required reconfiguration and execution clock speed
BAM—Boot Assist Module Software and Hardware used for device start-up and configuration
2 _{A high level summary of some key durations that need to be considered when recovering from low power modes. This}
does not account for all durations at wake up. Other delays will be necessary to consider including, but not limited to the
external supply start-up time.
IRC Wake-up time must not be added to the overall wake-up time as it starts in parallel with the VREG.
All other wake-up times must be added to determine the total start-up time.
3 _{Either 64 KB or 8 KB available.}
4 _{64 KB of the RAM contents is retained, but not accessible in STANDBY mode.}
5 _{8 KB of the RAM contents is retained, but not accessible in STANDBY mode.}
6 _{Dependent on boot option after reset.}
Additional notes on low power operation:
• Fast wake-up using the on-chip 16 MHz internal RC oscillator allows rapid execution from RAM on exit from low
power modes
• The 16 MHz internal RC oscillator supports low speed code execution and clocking of peripherals when it is selected
as the system clock and can also be used as the PLL input clock source to provide fast start-up without the external
oscillator delay
• The device includes an internal voltage regulator that includes the following features:
PXD20 Microcontroller Data Sheet, Rev. 2
8
Preliminary—Subject to Change Without Notice
Freescale Semiconductor