MC812A4CPVE8 Freescale Semiconductor, MC812A4CPVE8 Datasheet - Page 139

• 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

12.9 Interrupt Sources
12.10 General-Purpose I/O Ports
This section describes the general-purpose I/O ports.
12.10.1 Timer Port Data Register
An I/O pin used by the timer defaults to general-purpose I/O unless an internal function which uses that
pin is enabled.
Read: Anytime
Write: Anytime
PT7–PT0 — Timer Port Data Bits
Freescale Semiconductor
Data written to PORTT is buffered and drives the pins only when they are configured as
general-purpose outputs.
Reading an input (data direction bit = 0) reads the pin state; reading an output (data direction bit = 1)
reads the latch.
Writing to a pin configured as a timer output does not change the pin state.
Timer function:
PA function:
Address: $00AE
Pulse accumulator overflow
Reset:
Read:
Write:
Pulse accumulator input
Timer channel 0
Timer channel 1
Timer channel 2
Timer channel 3
Timer channel 4
Timer channel 5
Timer channel 6
Timer channel 7
Timer overflow
IC/OC7
Interrupt
Bit 7
PT7
Source
PAI
Figure 12-25. Timer Port Data Register (PORTT)
IC/OC6
Table 12-5. Timer Interrupt Sources
PT6
6
MC68HC812A4 Data Sheet, Rev. 7
IC/OC5
PT5
5
PAOVF
Flag
PAIF
TOF
C0F
C1F
C2F
C3F
C4F
C5F
C6F
C7F
IC4OC4
Unaffected by reset
PT4
4
Enable
PAOVI
Local
C0I
C1I
C2I
C3I
C4I
C5I
C6I
C7I
TOI
PAI
IC/OC3
PT3
3
Mask
CCR
I bit
I bit
I bit
I bit
I bit
I bit
I bit
I bit
I bit
I bit
I bit
IC/OC2
PT2
2
$FFDC, $FFDD
$FFEC, $FFED
$FFDE, $FFDF
$FFDA, $FFDB
$FFEE, $FFEF
$FFEA, $FFEB
$FFE8, $FFE9
$FFE6, $FFE7
$FFE4, $FFE5
$FFE2, $FFE3
$FFE0, $FFE1
IC/OC1
Address
PT1
Vector
1
IC/OC0
Bit 0
PT0
Interrupt Sources
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