MC68HC912B32CFU8 Freescale Semiconductor, MC68HC912B32CFU8 Datasheet - Page 325

• Manufacturer Part Number: MC68HC912B32CFU8
• Description: IC MCU 32K FLASH 8MHZ 80-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MC68HC912B32CFU8

• Core Processor: CPU12
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 63
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 768 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

19.15 Peripheral Port Timing
Freescale Semiconductor
Frequency of operation
E-clock period
Peripheral data setup time
Peripheral data hold time
Delay time, peripheral data write
Delay time, peripheral data write
E-clock frequency
MCU read of ports
t
MCU read of ports
MCU write to ports
MCU write to port CAN
PDSU
= t
cyc
PORT A
PORTS
ECLK
ECLK
/2 + 40
Characteristic
Figure 19-11. Port Write Timing Diagram
Figure 19-10. Port Read Timing Diagram
M68HC12B Family Data Sheet, Rev. 9.1
MCU READ OF PORT
PREVIOUS PORT DATA
MCU WRITE TO PORT
t
PDSU
Symbol
t
t
t
PDSU
t
PWD
PWD
t
PDH
cyc
f
o
t
t
PDH
PWD
Min
125
102
dc
—
—
0
NEW DATA VALID
8.0 MHz
Peripheral Port Timing
Max
8.0
40
71
—
—
—
MHz
Unit
ns
ns
ns
ns
ns
325