MC68HC908GP32CB Freescale Semiconductor, MC68HC908GP32CB Datasheet - Page 154

• Manufacturer Part Number: MC68HC908GP32CB
• Description: IC MCU 32K FLASH 8MHZ 42-SDIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GP32CB

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 33
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 42-DIP (0.600", 15.24mm)
• For Use With: M68EVB908GP32 - BOARD EVALUATION FOR HC908GP32
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Serial Communications Interface Module (SCI)
SCP1 and SCP0 — SCI Baud Rate Prescaler Bits
SCR2–SCR0 — SCI Baud Rate Select Bits
Use this formula to calculate the SCI baud rate:
where:
Table 13-8
selected as SCI clock source.
154
These read/write bits select the baud rate prescaler divisor as shown in
and SCP0.
These read/write bits select the SCI baud rate divisor as shown in
SCR2–SCR0.
SCI clock source = f
PD = prescaler divisor
BD = baud rate divisor
shows the SCI baud rates that can be generated with a 4.9152-MHz bus clock when f
Address:
Reset:
Read:
Write:
baud rate
$0019
BUS
Bit 7
0
SCR2, SCR1, and SCR0
SCP1 and SCP0
or CGMXCLK (selected by SCIBDSRC bit in CONFIG2 register)
=
Figure 13-16. SCI Baud Rate Register (SCBR)
SCI clock source
-------------------------------------------- -
= Unimplemented
64 PD
00
01
10
11
Table 13-6. SCI Baud Rate Prescaling
Table 13-7. SCI Baud Rate Selection
6
0
000
001
010
011
100
101
110
111
×
MC68HC908GP32 Data Sheet, Rev. 10
×
SCP1
BD
5
0
SCP0
4
0
Prescaler Divisor (PD)
Baud Rate Divisor (BD)
R
R
3
0
13
1
3
4
= Reserved
128
SCR2
16
32
64
1
2
4
8
2
0
Table
Table
13-7. Reset clears
SCR1
1
0
13-6. Reset clears SCP1
Freescale Semiconductor
SCR0
Bit 0
0
BUS
is