MC68HC711P2CFN4 Freescale Semiconductor, MC68HC711P2CFN4 Datasheet - Page 158

• Manufacturer Part Number: MC68HC711P2CFN4
• Description: IC MCU 32K OTP 4MHZ 84-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC711P2CFN4

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: MI Bus, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Eeprom Size: 640 x 8
• 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: 84-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Timing System
8.8 Pulse accumulator
Technical Data
The MC68HC11P2 has an 8-bit counter that can be configured to
operate either as a simple event counter, or for gated time accumulation,
depending on the state of the PAMOD bit in the PACTL register. Refer
to the pulse accumulator block diagram,
In the event counting mode, the 8-bit counter is clocked to increasing
values by an external pin. The maximum clocking rate for the external
event counting mode is the E clock divided by two. In gated time
accumulation mode, a free-running E clock ÷ 64 signal drives the 8-bit
counter, but only while the external PAI pin is activated. Refer to
8-3. The pulse accumulator counter can be read or written at any time.
Freescale Semiconductor, Inc.
For More Information On This Product,
frequency
12.0 MHz
16.0 MHz
4.0 MHz
8.0 MHz
Crystal
Go to: www.freescale.com
Table 8-3. Pulse accumulator timing
Timing System
1.0 MHz
2.0 MHz
3.0 MHz
4.0 MHz
E clock
1000 ns
500 ns
333 ns
250 ns
Cycle
time
Figure
21.33 µs
16.0 µs
64 µs
32 µs
64/E
8-3.
MC68HC11P2 — Rev 1.0
16.384 ms
overflow
8.192 ms
5.461 ms
4.096 ms
PACNT
Table