MC908GR48AMFAE Freescale Semiconductor, MC908GR48AMFAE Datasheet - Page 222

• Manufacturer Part Number: MC908GR48AMFAE
• Description: IC MCU 8BIT 48K FLASH 48-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908GR48AMFAE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 37
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 24x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Timebase Module (TBM)
16.5 TBM Interrupt Rate
The interrupt rate is determined by the equation:
where:
222
FROM CGM MODULE
f
Divider = Divider value as determined by TBR2–TBR0 settings and TMBCLKSEL, see
CGMXCLK
FROM CONFIG2
TMBCLKSEL
CGMXCLK
= Frequency supplied from the clock generator (CGM) module
MC68HC908GR60A • MC68HC908GR48A • MC68HC908GR32A Data Sheet, Rev. 5
÷ 2
÷ 2
÷ 2
÷ 2
t
TBMRATE
÷ 2
÷ 2
÷ 2
Figure 16-1. Timebase Block Diagram
÷ 2
=
DIVIDE BY 128
PRESCALER
÷ 2
f
CGMXCLK
Divider
÷ 2
÷ 2
÷ 2
÷ 2
÷ 2
÷ 2
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
TBMCLK
TBON
Freescale Semiconductor
R
Table 16-1
TBIF
TBMINT
TBIE