MC812A4CPVE8 Freescale Semiconductor, MC812A4CPVE8 Datasheet - Page 231

• Manufacturer Part Number: MC812A4CPVE8
• Description: IC MCU 16BIT EEPROM 4K 112-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MC812A4CPVE8

• Core Processor: CPU12
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 83
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: EEPROM
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 112-LQFP
• Processor Series: HC812A
• Core: HC12
• Data Bus Width: 16 bit
• Data Ram Size: 1 KB
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 91
• Number Of Timers: 8
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 8 Channel
• Controller Family/series: 68HC12
• No. Of I/o's: 91
• Eeprom Memory Size: 4KB
• Ram Memory Size: 1KB
• Cpu Speed: 8MHz
• No. Of Timers: 1
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

18.12 Peripheral Port Timing
Freescale Semiconductor
Frequency of operation (E-clock frequency)
E-clock period
Peripheral data setup time, MCU read of ports
Peripheral data hold time, MCU read of ports
Delay time, peripheral data write, MCU write to ports
t
PDSU
= t
cyc
PORT A
PORTS
ECLK
ECLK
/2 + 30
Characteristic
Figure 18-7. Port Write Timing Diagram
Figure 18-6. Port Read Timing Diagram
MC68HC812A4 Data Sheet, Rev. 7
MCU READ OF PORT
PREVIOUS PORT DATA
MCU WRITE TO PORT
t
PDSU
Symbol
t
t
PDSU
t
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
—
—
—
MHz
Unit
ns
ns
ns
ns
231