MC68HC711E20CFN2 Freescale Semiconductor, MC68HC711E20CFN2 Datasheet - Page 206

• Manufacturer Part Number: MC68HC711E20CFN2
• Description: IC MCU 20K 2MHZ OTP 52-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC711E20CFN2

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 2MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 38
• Program Memory Size: 20KB (20K x 8)
• Program Memory Type: OTP
• Eeprom Size: 512 x 8
• Ram Size: 768 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: 52-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Timing System
9.8.2 Pulse Accumulator Count Register
Technical Data
206
Address:
DDRA3 — Data Direction for Port A Bit 3
I4/O5 — Input Capture 4/Output Compare 5 Bit
RTR[1:0] — RTI Interrupt Rate Select Bits
This 8-bit read/write register contains the count of external input events
at the PAI input or the accumulated count. The PACNT is readable even
if PAI is not active in gated time accumulation mode. The counter is not
affected by reset and can be read or written at any time. Counting is
synchronized to the internal PH2 clock so that incrementing and reading
occur during opposite half cycles.
Reset:
Read:
Write:
Refer to
Refer to
Figure 9-26. Pulse Accumulator Count Register (PACNT)
0 = Output compare 5 function enable (no IC4)
1 = Input capture 4 function enable (no OC5)
$1027
Bit 7
Bit 7
Section 6. Parallel Input/Output (I/O)
9.6 Real-Time Interrupt
Bit 6
Timing System
6
Bit 5
5
Indeterminate after reset
Bit 4
4
(RTI).
Bit 3
3
M68HC11E Family — Rev. 3.2
Bit 2
2
Ports.
Bit 1
1
MOTOROLA
Bit 0
Bit 0