MC68340AG16E Freescale Semiconductor, MC68340AG16E Datasheet - Page 334

• Manufacturer Part Number: MC68340AG16E
• Description: IC MPU 32BIT 16MHZ 144-LQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68340AG16E

• Processor Type: M683xx 32-Bit
• Speed: 16MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 144-LQFP
• Controller Family/series: 68K
• Core Size: 32 Bit
• No. Of I/o's: 16
• Cpu Speed: 16MHz
• No. Of Timers: 2
• Embedded Interface Type: UART
• Digital Ic Case Style: LQFP
• Rohs Compliant: Yes
• Processor Series: M683xx
• Core: CPU32
• Maximum Clock Frequency: 16 MHz
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Details

TxCTS—Transmitter Clear-to-Send
SB3–SB0—Stop-Bit Length Control
MOTOROLA
These bits select the length of the stop bit appended to the transmitted character as
listed in Table 7-10. Stop-bit lengths of nine-sixteenth to two bits, in increments of one-
sixteenth bit, are programmable for character lengths of six, seven, and eight bits. For a
character length of five bits, one and one-sixteenth to two bits are programmable in
increments of one-sixteenth bit. In all cases, the receiver only checks for a high
condition at the center of the first stop-bit position—i.e., one bit time after the last data
bit or after the parity bit, if parity is enabled.
If an external 1 clock is used for the transmitter, MR2 bit 3 = 0 selects one stop bit, and
MR2 bit 3 = 1 selects two stop bits for transmission.
1 = Enables clear-to-send operation. The transmitter checks the state of the CTS
0 = The CTS has no effect on the transmitter.
input each time it is ready to send a character. If CTS is asserted, the character
is transmitted. If CTS is negated, the channel TxDx remains in the high state,
and the transmission is delayed until CTS is asserted. Changes in CTS while
a character is being transmitted do not affect transmission of that character. If
both TxCTS and TxRTS are enabled, TxCTS controls the operation of the
transmitter.
SB3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Freescale Semiconductor, Inc.
For More Information On This Product,
SB2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Table 7-10. SBx Control Bits
MC68340 USER’S MANUAL
SB1
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0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
SB0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Length 6-8 Bits
0.563
0.625
0.688
0.750
0.813
0.875
0.938
1.000
1.563
1.625
1.688
1.750
1.813
1.875
1.938
2.000
Length 5 Bits
1.063
1.125
1.188
1.250
1.313
1.375
1.438
1.500
1.563
1.625
1.688
1.750
1.813
1.875
1.938
2.000
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