mpc5645s Freescale Semiconductor, Inc, mpc5645s Datasheet - Page 8

• Manufacturer Part Number: mpc5645s
• Description: Mpc5645s Microcontroller Data Sheet
• Manufacturer: Freescale Semiconductor, Inc

Overview
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Additional notes on low power operation:
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RUN
HALT
STOP
STAND
BY
POR
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
Flash configured in disabled mode.
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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.
Either 64 KB or 8 KB available.
64 KB of the RAM contents is retained, but not accessible in STANDBY mode.
8 KB of the RAM contents is retained, but not accessible in STANDBY mode.
Dependent on boot option after reset.
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:
— Regulates input to generate all internal supplies
— Manages power gating
— External ballast transistor for high power regulator
CG
CG
On
Off
Off
SoC features
OP OP OP
OP OP OP
CG CG OP
Off
Off
Off
Off
64K
4
8K
5
2
2
2
On
On
CG CG CG OP OP On
Off
Off
OP OP On
OP OP On
Off
Off
MPC5645S Microcontroller Data Sheet, Rev. 6
Table 2. Operating mode summary
Off
Off
Clock sources
OP OP On
OP OP On
OP On
OP On
OP —
OP OP OP FP
OP OP OP LP
OP OP OP LP
OP OP OP LP
—
FP
—
—
350 µs 4 µs 20 µs
350 µs 8 µs 100 µs 1 ms 200 µs Var 28 µs
200 µs 8 µs 100 µs 1 ms 200 µs Var 28 µs
500 µs 8 µs 100 µs 1 ms 200 µs
—
—
—
—
Wake-up time
Freescale Semiconductor
—
—
1 ms 200 µs —
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—
1
—
—
—
30 µs
30 µs
BAM
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