MC908QB4CPE Freescale Semiconductor, MC908QB4CPE Datasheet - Page 131
MC908QB4CPE
Manufacturer Part Number
MC908QB4CPE
Description
IC MCU 8BIT 4K FLASH 16-DIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908QB8CDWE.pdf
(236 pages)
Specifications of MC908QB4CPE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
13
Program Memory Size
4KB (4K x 8)
Program Memory Type
FLASH
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
16-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Manufacturer
Quantity
Price
Part Number:
MC908QB4CPE
Manufacturer:
FREESCALE
Quantity:
20 000
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SCP1 and SCP0 — ESCI Baud Rate Register Prescaler Bits
SCR2–SCR0 — ESCI Baud Rate Select Bits
13.8.8 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.
Freescale Semiconductor
These read/write bits select the baud rate register prescaler divisor as shown in
These read/write bits select the ESCI baud rate divisor as shown in
SCR2–SCR0.
Reset:
Read:
Write:
There are two prescalers available to adjust the baud rate — one in the
ESCI baud rate register and one in the ESCI prescaler register.
PDS2
Bit 7
0
Figure 13-17. 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
PDS1
Table 13-6. ESCI Baud Rate Prescaling
Table 13-7. ESCI Baud Rate Selection
6
0
MC68HC908QB8 Data Sheet, Rev. 3
PDS0
5
0
PSSB4
NOTE
0
4
Prescaler Divisor (BPD)
Baud Rate Divisor (BD)
Baud Rate Register
PSSB3
3
0
13
1
3
4
128
16
32
64
1
2
4
8
PSSB2
2
0
Table
PSSB1
1
0
13-7. Reset clears
Table
PSSB0
Bit 0
0
13-6.
Registers
131
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