Datasheet

Chapter 14 Enhanced Capture Timer (ECT16B8CV3)
MC9S12XE-Family Reference Manual Rev. 1.25
560 Freescale Semiconductor
14.3.2.27 Precision Timer Modulus Counter Prescaler Select Register (PTMCPSR)
Read: Anytime
Write: Anytime
All bits reset to zero.
Table 14-34. Precision Timer Prescaler Selection Examples when PRNT = 1
PTPS7 PTPS6 PTPS5 PTPS4 PTPS3 PTPS2 PTPS1 PTPS0
Prescale
Factor
00000000 1
00000001 2
00000010 3
00000011 4
00000100 5
00000101 6
00000110 7
00000111 8
00001111 16
00011111 32
00111111 64
01111111 128
11111111 256
Module Base + 0x002F
76543210
R
PTMPS7 PTMPS6 PTMPS5 PTMPS4 PTMPS3 PTMPS2 PTMPS1 PTMPS0
W
Reset 00000000
Figure 14-50. Precision Timer Modulus Counter Prescaler Select Register (PTMCPSR)
Table 14-35. PTMCPSR Field Descriptions
Field Description
7:0
PTMPS[7:0]
Precision Timer Modulus Counter Prescaler Select Bits — These eight bits specify the division rate of the
modulus counter prescaler. These are effective only when the PRNT bit of TSCR1 is set to 1. Table 14-36 shows
some possible division rates.
The newly selected prescaler division rate will not be effective until a load of the load register into the modulus
counter count register occurs.