MC68331CEH20 Freescale Semiconductor, MC68331CEH20 Datasheet - Page 81

• Manufacturer Part Number: MC68331CEH20
• Description: IC MCU 32BIT 20MHZ 132-PQFP
• Manufacturer: Freescale Semiconductor
• Series: M683xxr

Specifications of MC68331CEH20

• Core Processor: CPU32
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: EBI/EMI, SCI, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Type: ROMless
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 132-QFP
• Controller Family/series: 68K
• No. Of I/o's: 18
• Cpu Speed: 20MHz
• No. Of Timers: 1
• Embedded Interface Type: QSPI, SCI, UART
• No. Of Pwm Channels: 2
• Digital Ic Case Style: PQFP
• Rohs Compliant: Yes
• Processor Series: M683xx
• Core: CPU32
• Data Bus Width: 32 bit
• Data Ram Size: 80 B
• Interface Type: QSPI, SCI, UART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 18
• Number Of Timers: 1
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Cpu Family: 68K/M683xx
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 20MHz
• Program Memory Size: Not Required
• Total Internal Ram Size: 80Byte
• # I/os (max): 18
• Number Of Timers - General Purpose: 1
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 132
• Package Type: PQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Ram Size: -
• Program Memory Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

F1B — Force Logic Level One on PWMB
PWMA/PWMB — PWM Control Registers A/B
PWMCNT — PWM Count Register
PWMBUFA/B — PWM Buffer Registers A/B
PRESCL — GPT Prescaler
MC68331TS/D
These registers are associated with the pulse-width value of the PWM output on the corresponding
PWM pin. A value of $00 loaded into one of these registers results in a continuously low output on the
corresponding pin. A value of $80 results in a 50% duty cycle output. Maximum value ($FF) selects an
output that is high for 255/256 of the period.
PWMCNT is the 16-bit free-running counter associated with the PWM functions of the GPT module.
These read-only registers contain values associated with the duty cycles of the corresponding PWM.
Reset state is $0000.
The 9-bit prescaler value can be read from bits [8:0] at this address. Bits [15:9] always read as zeros.
Reset state is $0000.
0 = Force logic level zero output on PWMB pin
1 = Force logic level one output on PWMB pin
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
$YFF92A, $YFF92B
$YFF926, $YFF927
$YFF92C
$YFF928
81