mc68hc908gr16 Freescale Semiconductor, Inc, mc68hc908gr16 Datasheet - Page 170
mc68hc908gr16
Manufacturer Part Number
mc68hc908gr16
Description
M68hc08 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908GR16.pdf
(276 pages)
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Enhanced Serial Communications Interface (ESCI) Module
SCP1 and SCP0 — ESCI Baud Rate Register Prescaler Bits
SCR2–SCR0 — ESCI Baud Rate Select Bits
14.8.8 ESCI Prescaler Register
The ESCI prescaler register (SCPSC) together with the ESCI baud rate register selects the baud rate for
both the receiver and the transmitter.
170
These read/write bits select the baud rate register prescaler divisor as shown in
clears SCP1 and SCP0.
These read/write bits select the ESCI baud rate divisor as shown in
SCR2–SCR0.
Address:
There are two prescalers available to adjust the baud rate. One in the ESCI
baud rate register and one in the ESCI prescaler register.
Reset:
Read:
Write:
$0009
PDS2
Bit 7
0
Figure 14-18. ESCI Prescaler Register (SCPSC)
SCP[1:0]
SCR[2:1:0]
0 0
0 1
1 0
1 1
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
Table 14-7. ESCI Baud Rate Prescaling
Table 14-8. ESCI Baud Rate Selection
PDS1
6
0
MC68HC908GR16 Data Sheet, Rev. 5.0
PDS0
5
0
NOTE
PSSB4
Prescaler Divisor (BPD)
4
0
Baud Rate Divisor (BD)
Baud Rate Register
PSSB3
13
1
3
4
3
0
128
16
32
64
1
2
4
8
PSSB2
2
0
Table
PSSB1
14-8. Reset clears
1
0
Freescale Semiconductor
Table
PSSB0
Bit 0
0
14-7. Reset
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