MC68HC16Z1CFC16 Freescale Semiconductor, MC68HC16Z1CFC16 Datasheet - Page 199

• Manufacturer Part Number: MC68HC16Z1CFC16
• Description: IC MPU 1K RAM 16MHZ 132-PQFP
• Manufacturer: Freescale Semiconductor
• Series: HC16r

Specifications of MC68HC16Z1CFC16

• Core Processor: CPU16
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Type: ROMless
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 132-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

8.7.7 Successive Approximation Register
8.7.8 Result Registers
M68HC16 Z SERIES
USER’S MANUAL
The successive approximation register (SAR) accumulates the result of each conver-
sion one bit at a time, starting with the most significant bit.
At the start of the resolution period, the MSB of the SAR is set, and all less significant
bits are cleared. Depending on the result of the first comparison, the MSB is either left
set or cleared. Each successive bit is set or left cleared in descending order until all
eight or ten bits have been resolved.
When conversion is complete, the content of the SAR is transferred to the appropriate
result register. Refer to
and configuration.
Result registers are used to store data after conversion is complete. The registers can
be accessed from the IMB under ABIU control. Each register can be read from three
different addresses in the ADC memory map. The format of the result data depends
on the address from which it is read.
SAMPLE
INITIAL
TIME
CH 1
1
SAMPLE AND TRANSFER
SCF FLAG SET HERE AND SEQUENCE
TRANSFER
PERIOD
6 CYCLES
ENDS IF IN THE 4-CHANNEL MODE
TIME
CH 2
(2 ADC CLOCKS)
SAMPLE
FINAL
TIME
Freescale Semiconductor, Inc.
CH 3
Figure 8-3 10-Bit Conversion Timing
For More Information On This Product,
APPENDIX D REGISTER SUMMARY
ANALOG-TO-DIGITAL CONVERTER
CYCLES
SAR9
2
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CH 4
CYCLE
SAR8
1
SUCCESSIVE APPROXIMATION
CYCLE
Table 8-9
SAR7
1
CH 5
CYCLE
SAR6
1
RESOLUTION TIME
SEQUENCE
SCF FLAG SET HERE AND SEQUENCE
CYCLE
SAR5
1
ENDS IF IN THE 8-CHANNEL MODE
shows the three types of formats.
CH 6
CYCLE
SAR4
1
CYCLE
SAR3
1
CYCLE
SAR2
CH 7
1
CYCLE
SAR1
TRANSFER CONVERSION TO
RESULT REGISTER AND SET
1
for register mapping
CYCLE
SAR0
1
CH 8
CYCLE
END
CCF
EOC
1
16
16 ADC 10-BIT TIM
8-13