MC68HC705JP7CDW Freescale Semiconductor, MC68HC705JP7CDW Datasheet - Page 87

• Manufacturer Part Number: MC68HC705JP7CDW
• Description: IC MCU 8BIT 28-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MC68HC705JP7CDW

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SIO
• Peripherals: POR, Temp Sensor, WDT
• Number Of I /o: 22
• Program Memory Size: 6KB (6K x 8)
• Program Memory Type: OTP
• Ram Size: 224 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Freescale Semiconductor
Point
0
1
2
3
COMP2
(TCAP)
Begin initial discharge and select mode 2 by
clearing CHG and ATD1 and setting ATD2 in
the ACR. Also set ICEN bit in ACR and IEDG
bit in TCR.
V
Stop discharge and begin charge when the
next TOF sets the CHG control bit in ACR.
V
trips, setting CPF2 and CMP2, which causes
an ICF from the timer and clears the CHG
control bit in ACR. Must clear CPF2 to trap
next CPF2 flag.
V
CHG
OCF
CAP
CAP
TOF
CAP
ICF
V
X
falls to V
rises to V
0
MC68HC705JJ7 • MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
SS
X
Figure 8-10. A/D Conversion — TOF/ICF Control (Mode 2)
.
and comparator 2 output
Action
1
(MIN)
t
DIS
t
DIS
2
t
CHG
Software write
Wait out minimum t
Timer TOF sets the CHG control bit in
the ACR.
Wait out t
Timer ICF clears the CHG control bit
in the ACR.
Software/Hardware Action
CHG
3
time.
1
DIS
(MIN)
t
DIS
time.
2
Software
V
Free-running timer counter
overflow, f
V
MAX
X
A/D Conversion Methods
Dependent Variable(s)
, I
V
V
MAX
CHG
X
, I
=
DIS
, C
t
OSC
CHG
, C
EXT
C
EXT
EXT
x I
CHG
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