MCHC908GR8AVFAE Freescale Semiconductor, MCHC908GR8AVFAE Datasheet - Page 154

• Manufacturer Part Number: MCHC908GR8AVFAE
• Description: IC MCU 8K FLASH 8MHZ 32-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MCHC908GR8AVFAE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 21
• Program Memory Size: 7.5KB (7.5K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 6x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Serial Communications Interface (SCI) Module
13.8.6 SCI Data Register
The SCI data register (SCDR) is the buffer between the internal data bus and the receive and transmit
shift registers. Reset has no effect on data in the SCI data register.
R7/T7–R0/T0 — Receive/Transmit Data Bits
13.8.7 SCI Baud Rate Register
The baud rate register (SCBR) selects the baud rate for both the receiver and the transmitter.
SCP1 and SCP0 — SCI Baud Rate Prescaler Bits
154
Reading the SCDR accesses the read-only received data bits, R7:R0. Writing to the SCDR writes the
data to be transmitted, T7:T0.
Reset has no effect on the SCDR.
These read/write bits select the baud rate prescaler divisor as shown in
and SCP0.
Address:
Address:
Do not use read/modify/write instructions on the SCI data register.
Reset:
Reset:
Read:
Read:
Write:
Write:
$0018
$0019
Bit 7
Bit 7
R7
T7
0
SCP1 and SCP0
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
Figure 13-17. SCI Baud Rate Register (SCBR)
= Unimplemented
Figure 13-16. SCI Data Register (SCDR)
00
01
10
11
Table 13-6. SCI Baud Rate Prescaling
R6
T6
6
6
0
SCP1
R5
T5
5
5
0
NOTE
Unaffected by reset
SCP0
R4
T4
4
4
0
Prescaler Divisor (PD)
R3
T3
R
R
3
3
0
13
1
3
4
= Reserved
SCR2
R2
T2
2
2
0
Table
SCR1
R1
T1
1
1
0
13-6. Reset clears SCP1
Freescale Semiconductor
SCR0
Bit 0
Bit 0
R0
T0
0