MC68HC908GR16CFJ Freescale Semiconductor, MC68HC908GR16CFJ Datasheet - Page 218

• Manufacturer Part Number: MC68HC908GR16CFJ
• Description: IC MCU 16K FLASH 8MHZ SPI 32LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GR16CFJ

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: LIN, SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 21
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Timebase Module (TBM)
17.5 TBM Interrupt Rate
The interrupt rate is determined by the equation:
where:
218
FROM CGM MODULE
f
Divider = Divider value as determined by TBR2–TBR0 settings, see
TBMCLK
FROM CONFIG2
TMBCLKSEL
CGMXCLK
=Frequency supplied from the clock generator (CGM) module
÷ 2
÷ 2
÷ 2
÷ 2
÷ 2
÷ 2
t
TBMRATE
÷ 2
Figure 17-1. Timebase Block Diagram
÷ 2
MC68HC908GR16 Data Sheet, Rev. 5.0
DIVIDE BY 128
PRESCALER
÷ 2
=
÷ 2
------------------------------- -
f
÷ 2
TBMRATE
1
÷ 2
÷ 2
÷ 2
=
÷ 2
--------------------------- -
f
TBMCLK
Divider
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
0
1
Table 17-1
TBMCLK
TBON
Freescale Semiconductor
R
TBIF
TBMINT
TBIE