MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 280

• Manufacturer Part Number: MPC555CME
• Description: KIT EVALUATION FOR MPC555
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC555CME

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC555
• Data Bus Width: 32 bit
• Interface Type: RS-232
• For Use With/related Products: MPC555
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

8.9 Basic Power Structure
8.9.1 Clock Unit Power Supply
8.9.2 Chip Power Structure
8.9.2.1 VDDL
8.9.2.2 VDDI
MPC555
USER’S MANUAL
KAPWR and VSS power the following clock unit modules: oscillator, PITRTCLK and
TMBCLK generation logic, timebase, decrementer, RTC, PIT, system clock control
register (SCCR), low-power and reset-control register (PLPRCR), and reset status
register (RSR). All other circuits are powered by the normal supply pins, VDDI, VDDL,
VDDH and VSS. The power supply for each block is listed in
The following are the relations between different power supplies:
The MPC555 / MPC556 provides a wide range of possibilities for power supply con-
nections.
sic units on the chip.
The I/O buffers and logic are fed by a 3.3-V power supply.
VDDI powers the internal logic of the MPC555 / MPC556, nominally 3.3 V.
• VDDL = VDDI = VDDSYN = VDDF = 3.3 V ±10%
• KAPWR
• VDDSRAM
• VDDSRAM
• VPP
/
MPC556
Figure 8-10
≥
VDDL – 0.3 V, but VPP – VDDL < 4.0 volts
≥
VDDL – 0.2 V (during normal operation)
≥
≥
VDDL – 0.3 V (during normal operation)
1.4 V (during standby operation)
CLKOUT
SPLL (digital),
System low-power control
Internal logic
Clock drivers
SPLL (analog)
Main oscillator
Reset machine
Limp mode mechanism
Register control
SCCR, PLLRCR and RSR
RTC, PIT, TB, and DEC
SRAM,
VDDSRAM detector,
VSRMCR
Table 8-7 Clock Unit Power Supply
illustrates the different power supply sources for each of the ba-
CLOCKS AND POWER CONTROL
Circuit
Rev. 15 October 2000
Power Supply
VDDL/VDDI
VDDSRAM
VDDSYN
KAPWR
Table
8-7.
MOTOROLA
8-20