MC68HC908AB32CFU Freescale Semiconductor, MC68HC908AB32CFU Datasheet - Page 276

• Manufacturer Part Number: MC68HC908AB32CFU
• Description: IC MCU 8MHZ 32K FLASH 64-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908AB32CFU

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM
• Number Of I /o: 51
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Serial Communications Interface
Technical Data
276
Use this formula to calculate the SCI baud rate:
where:
This makes the formula:
Table 15-8
4.9152MHz CGMXCLK.
SCI clock source = CGMXCLK
PD = prescaler divisor
BD = baud rate divisor
(See
Serial Communications Interface Module (SCI)
9.5.6 Crystal Output Frequency Signal
SCR2, SCR1, and SCR0
shows the SCI baud rates that can be generated with a
baud rate
baud rate
Table 15-7. SCI Baud Rate Selection
000
001
010
011
100
101
110
111
=
=
SCI clock source
-------------------------------------------- -
----------------------------------- -
64 PD BD
CGMXCLK
64 PD BD
×
×
×
×
Divisor (BD)
Baud Rate
MC68HC908AB32
128
Freescale Semiconductor
16
32
64
1
2
4
8
(CGMXCLK).)
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Rev. 1.1