MC68HC711K4CFU4 Freescale Semiconductor, MC68HC711K4CFU4 Datasheet - Page 71

• Manufacturer Part Number: MC68HC711K4CFU4
• Description: IC MCU 24K 4MHZ EEPROM 80-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC711K4CFU4

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 62
• Program Memory Size: 24KB (24K x 8)
• Program Memory Type: OTP
• Eeprom Size: 640 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: 80-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

11 Pulse Accumulator
M68HC11 K Series
MC68HC11KTS/D
PA7/
PAI/
OC1
(FROM MAIN TIMER)
PIN
M68HC11 K-series MCUs have an 8-bit counter that can be configured as a simple event counter or for
gated time accumulation. The counter can be read or written at any time.
The port A bit 7 I/O pin can be configured to act as a clock in event counting mode, or as a gate signal
to enable a free-running clock (E divided by 64) to the 8-bit counter in gated time accumulation mode.
MAIN TIMER
E 64 CLOCK
Overflow —
Cycle Time
CPU Clock
1 Count —
DDRA7
FROM
FROM
OC1
OUTPUT
BUFFER
EDGE DETECTOR
INPUT BUFFER
Figure 18 Pulse Accumulator System Block Diagram
AND
Freescale Semiconductor, Inc.
(2
(2
(1/E)
For More Information On This Product,
(E)
14
6
/E)
TMSK2 INT ENABLES
/E)
PACTL CONTROL
Pulse Accumulator (Gated Mode)
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DATA BUS
8.192 ms
8.0 MHz
2.0 MHz
MUX
32.0 s
2:1
500 ns
INTERNAL
DATA BUS
Common XTAL Frequencies
PAI EDGE
PAEN
PAEN
CLOCK
12.0 MHz
5.461 ms
21.33 s
3.0 MHz
333 ns
TFLG2 INTERRUPT STATUS
OVERFLOW
ENABLE
PACNT 8-BIT COUNTER
PAOVI
PAOVF
PAII
PAIF
DISABLE
FLAG SETTING
16.0 MHz
4.096 ms
4.0 MHz
16.0 s
250 ns
MOTOROLA
INTERRUPT
REQUESTS
1
2
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