MC68HC705X32CFU Freescale Semiconductor, MC68HC705X32CFU Datasheet - Page 130
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MC68HC705X32CFU
Manufacturer Part Number
MC68HC705X32CFU
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68HC705X32CFU.pdf
(232 pages)
Specifications of MC68HC705X32CFU
Cpu Family
HC05
Device Core Size
8b
Frequency (max)
4MHz
Interface Type
SCI
Program Memory Type
EPROM
Program Memory Size
32KB
Total Internal Ram Size
528Byte
# I/os (max)
32
Number Of Timers - General Purpose
1
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
On-chip Adc
8-chx8-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
64
Package Type
PQFP
Lead Free Status / Rohs Status
Supplier Unconfirmed
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC68HC705X32CFU4
Manufacturer:
FREESCALE
Quantity:
20 000
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9
The A/D reference input (AN0–AN7) is applied to a precision internal D/A converter. Control logic
drives this D/A converter and the analog output is successively compared with the analog input
sampled at the beginning of the conversion. The conversion is monotonic with no missing codes.
The result of each successive comparison is stored in the SAR and, when the conversion is
complete, the contents of the SAR are transferred to the read-only result data register ($08), and
the conversion complete flag, COCO, is set in the A/D status/control register ($09).
Warning: Any write to the A/D status/control register will abort the current conversion, reset the
At power-on or external reset, both the ADRC and ADON bits are cleared; thus the A/D is disabled.
(VRH+VRL)/2
VRH
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
VRL
conversion complete flag and start a new conversion on the selected channel.
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 9-1 A/D converter block diagram
ANALOG TO DIGITAL CONVERTER
A/D result register (ADDATA) $08
Result
Go to: www.freescale.com
Successive approximation
register (SAR) and control
with sample and hold
8-bit capacitive DAC
A/D status/control register (ADSTAT)$09
CH0
CH1
CH2
CH3
0
ADON
VRH
VRL
MC68HC05X16
ADRC
COCO
Rev. 1
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