MC68EN360AI25VL Freescale, MC68EN360AI25VL Datasheet - Page 606

• Manufacturer Part Number: MC68EN360AI25VL
• Manufacturer: Freescale

Specifications of MC68EN360AI25VL

• Family Name: M68000
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 25MHz
• Instruction Set Architecture: RISC
• Operating Supply Voltage (max): 3.3V
• Operating Supply Voltage (min): 2.7V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 240
• Package Type: FQFP
• Lead Free Status / RoHS Status: Compliant

Serial Management Controllers (SMCs)
Bits 15, 7, 6—Reserved
CLEN—Character Length
SL—Stop Length
PEN—Parity Enable
PM—Parity Mode
SM—SMC Mode
7-282
These bits should be cleared by the user.
The CLEN value should be programmed with the total number of bits in the character mi-
nus one. The total number of bits in the character is calculated as the sum of: 1 (start bit
always present) + number of data bits (5–14) + number of parity bits (0 or 1) + number of
stop bits (1 or 2).
Example: For 8 data bits, no parity, and 1 stop bit, the total number of bits in the character
is 1 + 8 + 0 + 1 = 10. Thus, CLEN should be programmed to 9.
The number of data bits in the character may range from 5 to 14 bits. If the data bit length
is less than 8 bits, the MSBs of each byte in memory are not used on transmit and are
written with zeros on receive. If the data bit length is more than 8 bits, the MSBs of each
16-bit word in memory are not used on transmit and are written with zeros on receive.
0 = One stop bit
1 = Two stop bits
0 = No parity
1 = Parity is enabled for the transmitter and receiver as determined by the PM bit.
0 = Odd parity
1 = Even parity
00 = GCI or SCIT support
01 = Reserved
10 = UART (must be selected for SMC UART operation)
11 = Totally transparent operation
The total number of bits in the character must never exceed 16.
Thus, if a 14-bit data length is chosen, SL must be set to one
stop bit, and parity should not be enabled. If a 13-bit data length
is chosen and parity is enabled, SL must be set to one stop bit.
The values 0 to 3 should not be written to CLEN, or erratic be-
havior may result.
Freescale Semiconductor, Inc.
For More Information On This Product,
MC68360 USER’S MANUAL
Go to: www.freescale.com
NOTES