MC9S08QD2MSCR Freescale Semiconductor, MC9S08QD2MSCR Datasheet - Page 149

• Manufacturer Part Number: MC9S08QD2MSCR
• Description: IC MCU 8BIT 8-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HCS08r

Specifications of MC9S08QD2MSCR

• Core Processor: HCS08
• Core Size: 8-Bit
• Speed: 16MHz
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 4
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 8-SOIC (3.9mm Width)
• Processor Series: S08QD
• Core: HCS08
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• 3rd Party Development Tools: EWS08
• Development Tools By Supplier: DEMO9S08QD4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details

11.3.2
The two read-only TPM counter registers contain the high and low bytes of the value in the TPM counter.
Reading either byte (TPMxCNTH or TPMxCNTL) latches the contents of both bytes into a buffer where
they remain latched until the other byte is read. This allows coherent 16-bit reads in either order. The
coherency mechanism is automatically restarted by an MCU reset, a write of any value to TPMxCNTH or
TPMxCNTL, or any write to the timer status/control register (TPMxSC).
Reset clears the TPM counter registers.
Freescale Semiconductor
Reset
W
R
Bit 15
Timer Counter Registers (TPMxCNTH:TPMxCNTL)
1
2
0
7
The maximum frequency that is allowed as an external clock is one-fourth of the bus
frequency.
If the external clock input is shared with channel n and is selected as the TPM clock source,
the corresponding ELSnB:ELSnA control bits must be set to 0:0 so channel n does not try to
use the same pin for a conflicting function.
CLKSB:CLKSA
PS2:PS1:PS0
0:0
0:1
1:0
1:1
14
Figure 11-4. Timer Counter Register High (TPMxCNTH)
0
6
0:0:0
0:0:1
0:1:0
0:1:1
1:0:0
1:0:1
1:1:0
1:1:1
Table 11-2. TPM Clock Source Selection
MC9S08QD4 Series MCU Data Sheet, Rev. 6
Table 11-3. Prescale Divisor Selection
Any write to TPMxCNTH clears the 16-bit counter.
13
0
5
TPM Clock Source to Prescaler Input
No clock selected (TPMx disabled)
12
0
4
External source (TPMxCLK)
Fixed system clock (XCLK)
Bus rate clock (BUSCLK)
TPM Clock Source Divided-By
11
3
0
128
16
32
64
1
2
4
8
Timer/Pulse-Width Modulator (S08TPMV2)
10
0
1,2
2
9
0
1
Bit 8
0
0
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