MC9S08QG8CPBE Freescale, MC9S08QG8CPBE Datasheet - Page 235
MC9S08QG8CPBE
Manufacturer Part Number
MC9S08QG8CPBE
Description
Manufacturer
Freescale
Datasheet
1.MC9S08QG8CPBE.pdf
(314 pages)
Specifications of MC9S08QG8CPBE
Cpu Family
HCS08
Device Core Size
8b
Frequency (max)
20MHz
Interface Type
I2C/SCI/SPI
Total Internal Ram Size
512Byte
# I/os (max)
12
Number Of Timers - General Purpose
1
Operating Supply Voltage (typ)
2.5/3.3V
Operating Supply Voltage (max)
3.6V
Operating Supply Voltage (min)
1.8V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Through Hole
Pin Count
16
Package Type
PDIP
Program Memory Type
Flash
Program Memory Size
8KB
Lead Free Status / RoHS Status
Compliant
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC9S08QG8CPBE
Manufacturer:
CYPRESS
Quantity:
310
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16.3.2
The two read-only TPM counter registers contain the high and low bytes of the value in the TPM counter.
Reading either byte (TPMCNTH or TPMCNTL) 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 TPMCNTH or TPMCNTL,
or any write to the timer status/control register (TPMSC).
Reset clears the TPM counter registers.
Freescale Semiconductor
Reset
W
R
Bit 15
Timer Counter Registers (TPMCNTH:TPMCNTL)
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 should 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
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
Figure 16-4. Timer Counter Register High (TPMCNTH)
MC9S08QG8 and MC9S08QG4 Data Sheet, Rev. 5
Table 16-2. TPM Clock Source Selection
Table 16-3. Prescale Divisor Selection
Any write to TPMCNTH clears the 16-bit counter.
13
0
5
TPM Clock Source to Prescaler Input
12
No clock selected (TPM disabled)
0
4
External source (TPMCLK)
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
1,2
0
2
9
0
1
Bit 8
0
0
233
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