MC68HC711K4CFU4 Freescale Semiconductor, MC68HC711K4CFU4 Datasheet - Page 132

• 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

Resets and Interrupts
5.8.3 Slow Mode
Technical Data
132
Address: $002E
DLY — Enable Oscillator Startup Delay Bit
Slow mode is a software selectable feature on M68HC(7)11KS devices
that allows the user to connect, under software control, an extra
divide-by-16 between the oscillator and the internal clock. This feature
permits a slow down of all the internal operations reducing power
consumption.
When WAI is used for power reduction, the slow mode helps further
reduce the power. Control of slow mode is performed in the system
configuration options 3 register (OPT3). See
SM — Slow-Mode Enable Bit
Reset:
Read:
Write:
Figure 5-12. System Configuration Options 3 Register (OPT3)
This bit is set during reset and can be written only once during the first
64 E-clock cycles after reset in normal modes. This bit can be used to
inhibit the oscillator startup delay after reset when using an external
clock source.
Read and write at any time
Freescale Semiconductor, Inc.
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0 = No stabilization delay on exit from STOP
1 = Stabilization delay enabled on exit from STOP
1 = When the SM bit is asserted, a 16-clock divider is connected
0 = When the SM bit is negated, the divider is disconnected and the
Bit 7
between the oscillator and the internal clock. This causes the
system clock to run 16 times slower than normal. All modules
of the MCU slow down, including the timer, SCI, SPI, and A/D.
It is also cleared in hardware when entering stop mode or when
reset, including POR, is asserted low.
system runs at normal bus speed.
0
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Resets and Interrupts
SM
6
0
5
0
4
0
3
0
Figure
2
0
5-12.
M68HC11K Family
1
0
MOTOROLA
Bit 0
0