MC68302EH20C Freescale Semiconductor, MC68302EH20C Datasheet - Page 428

• Manufacturer Part Number: MC68302EH20C
• Description: IC MPU MULTI-PROTOCOL 132-PQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68302EH20C

• Processor Type: M683xx 32-Bit
• Speed: 20MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 132-MQFP, 132-PQFP
• Family Name: M68000
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 20MHz
• Instruction Set Architecture: RISC
• Supply Voltage 1 (typ): 5V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 132
• Package Type: PQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Compliant

SCC Programming Reference
E.1.1.2 PER SCC REGISTERS. Each of the three SCCs has a set of the following six reg-
isters. These registers configure the SCC and the protocol operation. Some parameters and
register bits are protocol independent. The HDLC functions have been given for those
parameters and bits that are protocol specific.
E.1.1.2.1 Serial Configuration Register (SCON). This 16-bit register is located at offset
$882 (SCC1), $892 (SCC2), and $8A2 (SCC3). The SCON register is used to select the
clock source and baud rate for the SCC.
WOMS—Wired-OR Mode Select
EXTC—External Clock Source
TCS—Transmit Clock Source
RCS—Receive Clock Source
CD10—CD0—Clock Divider
DIV4—SCC Clock Prescaler Divide by 4
E.1.1.2.2 SCC Mode Register (SCM). This 16-bit register is located at offset $884
(SCC1), $894 (SCC2), and $8A4 (SCC3). The SCM register configures the operation of the
SCC and defines HDLC specific parameters. Note that reserved bits in registers should be
written as zeros.
E-6
WOMS EXTC
15
Used to preset the 11-bit counter that is decremented at the prescaler output rate.
NOF3
FLG
0 = TXD driver operates normally.
1 = TXD driver functions as an open-drain output and may be wired together with other
0 = The internal main clock is the source for the baud rate generator.
1 = The external clock on the TIN1 pin is the source for the baud rate generator.
0 = Transmit clock source is the baud rate generator output.
1 = Transmit clock source is the clock signal on TCLK pin.
0 = Receive clock source is the baud rate generator output.
1 = Receive clock source is the clock signal on RCLK pin.
0 = Divide-by-1 prescaler.
1 = Divide-by-4 prescaler.
15
7
14
TXD pins.
TCS
13
NOF2
ENC
14
6
RCS
12
CD10
11
DIAG1
NOF1
13
5
CD9
10
MC68360 USER’S MANUAL
CD8
9
DIAG0
NOF0
12
4
CD7
8
CD6
7
ENR
C32
11
3
CD5
6
CD4
5
FSE
ENT
10
2
CD3
4
CD2
3
MODE1
—
9
1
CD1
2
MOTOROLA
CD0
1
M0DE0
RTE
8
0
DIV4
0