MC9S12NE64VTUE Freescale Semiconductor, MC9S12NE64VTUE Datasheet - Page 245

• Manufacturer Part Number: MC9S12NE64VTUE
• Description: IC MCU 64K FLASH EEPROM 80-TQFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12NE64VTUE

• Core Processor: HCS12
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, Ethernet, I²C, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 38
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.375 V ~ 3.465 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 80-TQFP Exposed Pad, 80-eTQFP, 80-HTQFP, 80-VQFP
• Processor Series: S12N
• Core: HCS12
• Data Bus Width: 16 bit
• Data Ram Size: 8 KB
• Interface Type: I2C, SCI, SPI
• Maximum Clock Frequency: 125 MHz
• Number Of Programmable I/os: 70
• Number Of Timers: 4
• Operating Supply Voltage: - 0.3 V to + 3 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Development Tools By Supplier: EVB9S12NE64E, DEMO9S12NE64E
• Minimum Operating Temperature: - 65 C
• On-chip Adc: 10 bit, 8 Channel
• Cpu Family: HCS12
• Device Core Size: 16b
• Frequency (max): 25MHz
• Total Internal Ram Size: 8KB
• # I/os (max): 70
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 2.625/3.465V
• Operating Supply Voltage (min): 2.357/2.375/3.135V
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 105C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 80
• Package Type: TQFP
• For Use With: EVB9S12NE64E - BOARD EVAL FOR 9S12NE64DEMO9S12NE64E - DEMO BOARD FOR 9S12NE64
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

8.4.3
A 13-bit modulus counter in the baud rate generator derives the baud rate for both the receiver and the
transmitter. The value from 0 to 8191 written to the SBR[12:0] bits determines the module clock divisor.
The SBR bits are in the SCI baud rate registers (SCIBDH and SCIBDL). The baud rate clock is
synchronized with the bus clock and drives the receiver. The baud rate clock divided by 16 drives the
transmitter. The receiver has an acquisition rate of 16 samples per bit time.
Baud rate generation is subject to one source of error:
Table 8-13
When IREN = 0 then,
Freescale Semiconductor
•
Integer division of the module clock may not give the exact target frequency.
SCI baud rate = SCI module clock / (16 * SCIBR[12:0])
lists some examples of achieving target baud rates with a module clock frequency of 10.2 MHz.
Baud Rate Generation
SBR[12–0]
Table 8-13. Baud Rates (Example: Module Clock = 10.2 MHz)
1062
2125
4250
5795
Bits
133
266
531
17
33
66
Clock (Hz)
600,000.0
309,090.9
154,545.5
Receiver
76,691.7
38,345.9
19,209.0
9604.5
4800.0
2400.0
1760.1
MC9S12NE64 Data Sheet, Rev. 1.1
Transmitter
Clock (Hz)
37,500.0
19,318.2
9659.1
4793.2
2396.6
1200.6
600.3
300.0
150.0
110.0
Target Baud
38,400
19,200
Rate
9600
4800
2400
1200
600
300
150
110
Error
(%)
2.3
.62
.62
.14
.14
.11
.05
.00
.00
.00
Functional Description
245