S9S08SG16E1CTJ Freescale, S9S08SG16E1CTJ Datasheet - Page 251

• Manufacturer Part Number: S9S08SG16E1CTJ
• Manufacturer: Freescale

Specifications of S9S08SG16E1CTJ

• Cpu Family: HCS08
• Device Core Size: 8b
• Frequency (max): 40MHz
• Interface Type: SCI/SPI
• Total Internal Ram Size: 1KB
• # I/os (max): 16
• Number Of Timers - General Purpose: 1
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 12-chx10-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 20
• Package Type: TSSOP
• Program Memory Type: Flash
• Program Memory Size: 16KB
• Lead Free Status / RoHS Status: Compliant

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 (TPMxCNTH or TPMxCNTL) latches the contents of both bytes into a buffer where
they remain latched until the other half is read. This allows coherent 16-bit reads in either big-endian or
little-endian order which makes this more friendly to various compiler implementations. The coherency
mechanism is automatically restarted by an MCU reset or any write to the timer status/control register
(TPMxSC).
Reset clears the TPM counter registers. Writing any value to TPMxCNTH or TPMxCNTL also clears the
TPM counter (TPMxCNTH:TPMxCNTL) and resets the coherency mechanism, regardless of the data
involved in the write.
Freescale Semiconductor
Reset
W
R
Bit 15
TPM-Counter Registers (TPMxCNTH:TPMxCNTL)
0
7
14
0
6
Figure 16-8. TPM Counter Register High (TPMxCNTH)
CLKSB:CLKSA
PS2:PS1:PS0
000
001
010
011
100
101
110
111
Table 16-4. TPM-Clock-Source Selection
00
01
10
11
Table 16-5. Prescale Factor Selection
Any write to TPMxCNTH clears the 16-bit counter
13
5
0
MC9S08SG32 Data Sheet, Rev. 8
No clock selected (TPM counter disable)
TPM Clock Source to Prescaler Input
TPM Clock Source Divided-by
12
0
4
Fixed system clock
External source
Bus rate clock
128
16
32
64
1
2
4
8
11
0
3
Chapter 16 Timer/PWM Module (S08TPMV3)
10
0
2
1
9
0
Bit 8
0
0
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