MC68HC908GP32CP Freescale Semiconductor, MC68HC908GP32CP Datasheet - Page 335

• Manufacturer Part Number: MC68HC908GP32CP
• Description: IC MCU 8MHZ 32K FLASH 40-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GP32CP

• 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: 40-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: -

20.14.3 SPI Data Register
MC68HC908GP32
MOTOROLA
NOTE:
•
MC68HC08GP32
Address: $0012
Use this formula to calculate the SPI baud rate:
where:
The SPI data register consists of the read-only receive data register and
the write-only transmit data register. Writing to the SPI data register
writes data into the transmit data register. Reading the SPI data register
reads data from the receive data register. The transmit data and receive
data registers are separate registers that can contain different values.
(See Figure
R7–R0/T7–T0 — Receive/Transmit Data Bits
Do not use read-modify-write instructions on the SPI data register since
the register read is not the same as the register written.
Reset:
Read:
Write:
CGMOUT = base clock output of the clock generator module (CGM)
BD = baud rate divisor
Serial Peripheral Interface Module (SPI)
—
SPR1 and SPR0
Bit 7
R7
T7
Rev. 6
Baud rate
20-2.)
Figure 20-15. SPI Data Register (SPDR)
Table 20-4. SPI Master Baud Rate Selection
00
01
10
11
R6
T6
6
=
CGMOUT
------------------------- -
R5
T5
5
2
×
BD
Unaffected by reset
R4
T4
4
Serial Peripheral Interface Module (SPI)
Baud Rate Divisor (BD)
R3
T3
3
128
32
2
8
R2
T2
2
R1
T1
1
Technical Data
I/O Registers
Bit 0
R0
T0
333