MC68HC711P2CFN4 Freescale Semiconductor, MC68HC711P2CFN4 Datasheet - Page 166

• 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
8.9.2.2 Clock prescaler selection
Technical Data
CON12 — Concatenate Channels 1 and 2
The three available clocks are clock A, clock B, and clock S (scaled).
Clock A can be software selected to be E, E/2, E/4, or E/8. Clock B can
be software selected to be E, E/2, E/4,..., E/128. The scaled clock (clock
S) uses clock A as an input and divides it with a reloadable counter. The
rates available are software selectable to be clock A/2, down to clock A
/512.
The clock source portion of the block diagram shows the three clock
sources and how the scaled clock is created. Clock A is an input to an 8-
bit counter which is then compared to a user programmable scale value.
When they match, this circuit has an output that is divided by two and the
counter is reset.
Each PWM timer channel can be driven by one of two clocks. Refer to
Figure
PCKA[2:1] — Prescaler for clock A
Bit 3 — Not implemented; always reads zero
PCKB[3:1] — Prescaler for clock B
Freescale Semiconductor, Inc.
When concatenated, channel 1 is the high-order byte and the channel
2 pin (PH1) is the output.
Determines the frequency of clock A. Refer to
Determines the frequency of clock B. Refer to
For More Information On This Product,
1 = Channels 1 and 2 are concatenated into one 16-bit PWM
0 = Channels 1 and 2 are separate 8-bit PWMs.
8-4.
channel.
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Timing System
Table
Table
MC68HC11P2 — Rev 1.0
8-4.
8-4.