DEMO9S08EL32 Freescale Semiconductor, DEMO9S08EL32 Datasheet - Page 304

• Manufacturer Part Number: DEMO9S08EL32
• Description: BOARD DEMO FOR 9S08 EL MCU
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of DEMO9S08EL32

• Contents: Evaluation Board
• Processor To Be Evaluated: MC9S08EL32
• Data Bus Width: 8 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 12 V
• Silicon Manufacturer: Freescale
• Core Architecture: HCS08
• Core Sub-architecture: HCS08
• Silicon Core Number: MC9S08
• Silicon Family Name: S08EL
• Rohs Compliant: Yes
• For Use With/related Products: MC9S08EL32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Timer/PWM Module (S08TPMV3)
306
TPMxCNTH:TPMxCNTL
TPMxMODH:TPMxMODL = 0x0007
TPMxMODH:TPMxMODL = 0x0005
EPWM mode
(in TPMv2 and TPMv3)
TPMv2 TPMxCHn
CLKSB:CLKSA BITS
TPMv3 TPMxCHn
ELSnB:ELSnA BITS
RESET (active low)
MSnB:MSnA BITS
The following procedure can be used in TPM v3 (when the channel pin is also a port pin) to emulate
the high-true EPWM generated by TPM v2 after the reset.
...
configure the channel pin as output port pin and set the output pin;
configure the channel to generate the EPWM signal but keep ELSnB:ELSnA as 00;
configure the other registers (TPMxMODH, TPMxMODL, TPMxCnVH, TPMxCnVL, ...);
configure CLKSB:CLKSA bits (TPM v3 starts to generate the high-true EPWM signal, however
TPM does not control the channel pin, so the EPWM signal is not available);
wait until the TOF is set (or use the TOF interrupt);
enable the channel output by configuring ELSnB:ELSnA bits (now EPWM signal is available);
...
BUS CLOCK
Figure 0-2. Generation of low-true EPWM signal by TPM v2 and v3 after the reset
CHnF BIT
MC9S08EL32 Series and MC9S08SL16 Series Data Sheet, Rev. 3
00
00
00
0
10
01
1 2 3 4 5 6 7
Freescale Semiconductor
01
0 1
2
...