MC68HC711E9CFU2 Freescale Semiconductor, MC68HC711E9CFU2 Datasheet - Page 58

• Manufacturer Part Number: MC68HC711E9CFU2
• Description: IC MCU 12K OTP 2MHZ 64-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC711E9CFU2

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 2MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 38
• Program Memory Size: 12KB (12K x 8)
• Program Memory Type: OTP
• Eeprom Size: 512 x 8
• Ram Size: 512 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: 64-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Analog-to-Digital (A/D) Converter
58
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
PE0
PE1
PE2
PE3
PE4
PE5
PE6
PE7
ANALOG
INPUT
PIN
* THIS ANALOG SWITCH IS CLOSED ONLY DURING THE 12-CYCLE SAMPLE TIME.
Figure 3-2. Electrical Model of an A/D Input Pin (Sample Mode)
ADR1 A/D RESULT 1
ANALOG
PROTECTION
MUX
< 2 pF
DEVICE
INPUT
Figure 3-1. A/D Converter Block Diagram
+ ~20 V
– ~0.7 V
M68HC11E Family Data Sheet, Rev. 5.1
RESULT
ADR2 A/D RESULT 2
SUCCESSIVE APPROXIMATION
+ ~12V
– ~0.7V
DUMMY N-CHANNEL
OUTPUT DEVICE
REGISTER AND CONTROL
WITH SAMPLE AND HOLD
RESULT REGISTER INTERFACE
8-BIT CAPACITIVE DAC
ADR3 A/D RESULT 3
DIFFUSION/POLY
ADCTL A/D CONTROL
JUNCTION
LEAKAGE
400 nA
COUPLER
ð 4 kΩ
ADR4 A/D RESULT 4
~ 20 pF
*
Freescale Semiconductor
CAPACITANCE
V
RL
DAC
V
V
INTERNAL
DATA BUS
RH
Rl