MC68HC705B16CFN

Manufacturer Part NumberMC68HC705B16CFN
DescriptionIC MCU 2.1MHZ 15K OTP 52-PLCC
ManufacturerFreescale Semiconductor
SeriesHC05
MC68HC705B16CFN datasheet
 


Specifications of MC68HC705B16CFN

Core ProcessorHC05Core Size8-Bit
Speed2.1MHzConnectivitySCI
PeripheralsPOR, WDTNumber Of I /o32
Program Memory Size15KB (15K x 8)Program Memory TypeOTP
Eeprom Size256 x 8Ram Size352 x 8
Voltage - Supply (vcc/vdd)4.5 V ~ 5.5 VData ConvertersA/D 8x8b
Oscillator TypeInternalOperating Temperature-40°C ~ 85°C
Package / Case52-PLCCLead Free Status / RoHS StatusContains lead / RoHS non-compliant
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ADON — A/D converter on
The ADON bit allows the user to enable/disable the A/D converter.
1 (set)
–
A/D converter is switched on.
0 (clear) –
A/D converter is switched off.
When the A/D converter is switched on, it takes a time t
(see
Table 11-6
and
Table
11-7). Using the A/D converter before this time has elapsed may result
in the incorrect operation of the A/D, even after t
to be cleared and set again.
Power-on or external reset will clear the ADON bit, thus disabling the A/D converter.
CH3–CH0 — A/D channels 3, 2, 1 and 0
The CH3–CH0 bits allow the user to determine which channel of the A/D converter multiplexer is
selected. See
Table 8-2
for channel selection.
Reset clears the CH0–CH3 bits.
Table 8-2 A/D channel assignment
CH3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
MC68HC05B6
ANALOG TO DIGITAL CONVERTER
Rev. 4.1
for the current sources to stabilize
ADON
has elapsed. In this case ADON would have
ADON
CH2
CH1
CH0
Channel selected
0
0
0
AN0
0
0
1
AN1
0
1
0
AN2
0
1
1
AN3
1
0
0
AN4
1
0
1
AN5
1
1
0
AN6
1
1
1
AN7
0
0
0
VRH pin (high)
0
0
1
(VRH + VRL) / 2
0
1
0
VRL pin (low)
0
1
1
VRL pin (low)
1
0
0
VRL pin (low)
1
0
1
VRL pin (low)
1
1
0
VRL pin (low)
1
1
1
VRL pin (low)
8
Freescale
8-5

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