MC68HC11K1CFN4 Freescale Semiconductor, MC68HC11K1CFN4 Datasheet - Page 41

• Manufacturer Part Number: MC68HC11K1CFN4
• Description: IC MCU 640 EEPROM 4MHZ 84-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC11K1CFN4

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 37
• Program Memory Type: ROMless
• 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: 84-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Program Memory Size: -

2.10 V
2.11 Port Signals
M68HC11K Family
MOTOROLA
RH
and V
RL
The MODB pin is grounded to select special modes, and has no function
after reset. To select the normal operating modes (single-chip and
expanded) the MODB pin is pulled to a logic high level. Connecting
MODB to a voltage source other than V
battery backup input, V
threshold (about 0.7 volts) below the voltage at V
and part of the reset logic are powered from V
Reset must be driven low before V
until V
to utilize V
significant amount of external circuitry operates from V
shows a suggested circuit employing the V
These pins provide the reference voltage for the analog-to-digital
converter.
The K series contains 62 input/output lines arranged in eight ports, A
through H; all ports are eight bits except port D, which is six bits. The KS
series drops seven lines from port G and four from port H, for a total of
Freescale Semiconductor, Inc.
For More Information On This Product,
DD
has been restored to a valid level. The extra hardware required
STBY
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4.8 V
NICD
may be justified in certain applications where a
Figure 2-9. MODB/V
V
Pin Description
DD
+
STBY.
V
V
BATT
DD
MAX
690
When V
V Out
DD
DD
STBY
is removed and must remain low
4.7 K
DD
drops more than one MOS
enables it to function as a
STBY
Connection
STBY
TO MODB/ V
OF M68HC11
pin.
STBY
rather than V
, the MCU’s RAM
DD
STBY
.
Figure 2-9
Pin Description
Technical Data
VRH and VRL
DD
.
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