MC9S08RD32CDWE Freescale Semiconductor, MC9S08RD32CDWE Datasheet - Page 141

• Manufacturer Part Number: MC9S08RD32CDWE
• Description: IC MCU 32K FLASH 2K RAM 28-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HCS08r

Specifications of MC9S08RD32CDWE

• Core Processor: HCS08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Processor Series: S08RD
• Core: HCS08
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: SCI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 39
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWS08
• Development Tools By Supplier: DEMO9S08RG60E
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

When background mode is active, the timer counter and the coherency mechanism are frozen such that the
buffer latches remain in the state they were in when the background mode became active even if one or
both bytes of the counter are read while background mode is active.
10.7.3
The read/write TPM modulo registers contain the modulo value for the TPM counter. After the TPM
counter reaches the modulo value, the TPM counter resumes counting from $0000 at the next clock
(CPWMS = 0) or starts counting down (CPWMS = 1), and the overflow flag (TOF) becomes set. Writing
to TPM1MODH or TPM1MODL inhibits the TOF bit and overflow interrupts until the other byte is
written. Reset sets the TPM counter modulo registers to $0000, which results in a free-running timer
counter (modulo disabled).
It is good practice to wait for an overflow interrupt so both bytes of the modulo register can be written well
before a new overflow. An alternative approach is to reset the TPM counter before writing to the TPM
modulo registers to avoid confusion about when the first counter overflow will occur.
Freescale Semiconductor
Reset
Reset
W
W
R
R
Bit 15
Timer Counter Modulo Registers (TPM1MODH:TPM1MODL)
Bit 7
0
0
7
7
Figure 10-8. Timer Counter Modulo Register High (TPM1MODH)
Figure 10-9. Timer Counter Modulo Register Low (TPM1MODL)
14
0
6
0
6
6
MC9S08RC/RD/RE/RG Data Sheet, Rev. 1.11
13
0
5
0
5
5
12
0
4
0
4
4
11
3
0
3
3
0
10
0
2
0
2
2
9
0
1
0
1
1
Timer/PWM (TPM)
Bit 8
Bit 0
0
0
0
0
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