MC68HC705B16CFN Freescale Semiconductor, MC68HC705B16CFN Datasheet - Page 103

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MC68HC705B16CFN

Manufacturer Part Number
MC68HC705B16CFN
Description
IC MCU 2.1MHZ 15K OTP 52-PLCC
Manufacturer
Freescale Semiconductor
Series
HC05r
Datasheet

Specifications of MC68HC705B16CFN

Core Processor
HC05
Core Size
8-Bit
Speed
2.1MHz
Connectivity
SCI
Peripherals
POR, WDT
Number Of I /o
32
Program Memory Size
15KB (15K x 8)
Program Memory Type
OTP
Eeprom Size
256 x 8
Ram Size
352 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
52-PLCC
Lead Free Status / RoHS Status
Contains 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.
When the A/D converter is switched on, it takes a time t
(see
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
Reset clears the CH0–CH3 bits.
MC68HC05B6
Rev. 4.1
Table 11-6
1 (set)
0 (clear) –
Table 8-2
and
Table
A/D converter is switched on.
A/D converter is switched off.
for channel selection.
CH3
11-7). Using the A/D converter before this time has elapsed may result
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
ANALOG TO DIGITAL CONVERTER
Table 8-2 A/D channel assignment
CH2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
CH1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
ADON
CH0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
has elapsed. In this case ADON would have
ADON
Channel selected
(VRH + VRL) / 2
VRH pin (high)
VRL pin (low)
VRL pin (low)
VRL pin (low)
VRL pin (low)
VRL pin (low)
VRL pin (low)
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
for the current sources to stabilize
Freescale
8-5
8

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