MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 624

• 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

MPC555
USER’S MANUAL
Figure 17-3
/
— If the standard prescaler is selected (EPSCKE = 0), the the PSCK bit deter-
— If the enhanced prescaler is selected (EPSCKE = 1), the EPSCK bits select a
— The output of either the standard prescaler or the enhanced prescaler is then
— If the DIV2 bit is one, the TCR1 counter increments at a rate of the internal
MPC556
mines whether the standard prescaler divides the IMB clock input by 32 (PSCK
= 0) or four (PSCK = 1)
value by which the IMB clock is divided. The lowest frequency for TCR1 clock
is IMB clock divided by 64x8. The highest frequency for TCR1 clock is IMB
clock divided by two (2x1). See
divided by 1, 2, 4, or 8, depending on the value of the TCR1P field in the
TPUMCR.
clock divided by two. If DIV2 is zero, the TCR1 increment rate is defined by the
output of the TCR1 prescaler (which, in turn, takes as input the output of either
the standard or enhanced prescaler).
shows a diagram of the TCR1 prescaler control block.
Table 17-1 Enhanced TCR1 Prescaler Divide Values
0x04, 0x05,...0x1d
EPSCK Value
Table 17-2 TCR1 Prescaler Values
0x00
0x01
0x02
0x03
0x1e
0x1f
TCR1P Value
TIME PROCESSOR UNIT 3
Rev. 15 October 2000
0b00
0b01
0b10
0b11
Table
Divide by
17-1.
Divide IMB Clock By
1
2
4
8
10,12,...60
62
64
2
4
6
8
MOTOROLA
17-6