PIC16C433-I/P Microchip Technology, PIC16C433-I/P Datasheet - Page 51

• Manufacturer Part Number: PIC16C433-I/P
• Description: IC MCU CMOS 8BIT 10MHZ 2K 18-DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C433-I/P

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: LIN (Local Interconnect Network)
• Peripherals: POR, WDT
• Number Of I /o: 5
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: OTP
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 18-DIP (0.300", 7.62mm)
• For Use With: DVA16XP185 - ADAPTER DEVICE ICE 18DIP/SOICAC164030 - MODULE SKT PROMATEII 28DIP/SOICDVA16XP140 - ADAPTER DEVICE FOR MPLAB-ICE
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

8.5
The A/D module can operate during SLEEP mode. This
requires that the A/D clock source be set to RC
(ADCS<1:0> = 11). When the RC clock source is
selected, the A/D module waits one instruction cycle
before starting the conversion. This allows the SLEEP
instruction to be executed, which eliminates all digital
switching noise from the conversion. When the conver-
sion is completed, the GO/DONE bit will be cleared,
and the result loaded into the ADRES Register. If the A/
D interrupt is enabled, the device will wake-up from
SLEEP. If the A/D interrupt is not enabled, the A/D mod-
ule will then be turned off, although the ADON bit will
remain set.
When the A/D clock source is another clock option (not
RC), a SLEEP instruction will cause the present conver-
sion to be aborted and the A/D module to be turned off,
though the ADON bit will remain set.
Turning off the A/D places the A/D module in its lowest
current consumption state.
8.6
The overall accuracy of the A/D is less than ± 1 LSb for
V
all accuracy includes offset error, full scale error and
integral error. The A/D converter is monotonic over the
full V
less when either the analog reference (V
than 5.0V, or when the analog reference (V
than V
The maximum pin leakage current is specified in the
Device Data Sheet electrical specification, parameter
#D060.
In systems where the device frequency is low, use of
the A/D RC clock is preferred. At moderate to high fre-
quencies, T
lator. T
≤ 8 µs for preferred operation. This is because T
when derived from T
phase clock transitions. This reduces, to a large extent,
the effects of digital switching noise. This is not possi-
ble with the RC derived clock. The loss of accuracy due
to digital switching noise can be significant if many I/O
pins are active.
In systems where the device will enter SLEEP mode
after the start of the A/D conversion, the RC clock
source selection is required. In this mode, the digital
noise from the modules in SLEEP is stopped. This
method gives high accuracy.
 2002 Microchip Technology Inc.
DD
Note:
= 5V ± 10% and the analog V
DD
DD
AD
range. The resolution and accuracy may be
A/D Accuracy/Error
.
A/D Operation During SLEEP
must not violate the minimum and should be
For the A/D module to operate in SLEEP,
the A/D clock source must be set to RC
(ADCS<1:0> = 11). To perform an A/D
conversion in SLEEP, the GO/DONE bit
must be set, followed by the SLEEP
instruction.
AD
should be derived from the device oscil-
OSC
, is kept away from on-chip
REF
= V
DD
REF
. This over-
DD
) is less
) is less
Preliminary
AD
,
8.7
A device RESET forces all registers to their RESET
state. This forces the A/D module to be turned off, and
any conversion is aborted. The value that is in the
ADRES register is not modified for a RESET. The
ADRES register will contain unknown data after a
Power-on Reset.
8.8
If the input voltage exceeds the rail values (V
by greater than 0.2V, then the accuracy of the conver-
sion is out of specification.
An external RC filter is sometimes added for anti-
aliasing of the input signal. The R component should be
selected to ensure that the total source impedance is
kept under the 10 kΩ recommended specification. Any
external components connected (via hi-impedance) to
an analog input pin (capacitor, zener diode, etc.) should
have very little leakage current at the pin.
8.9
The ideal transfer function of the A/D converter is as
follows: the first transition occurs when the analog input
voltage (V
3).
FIGURE 8-3:
Note:
FEh
FFh
04h
03h
02h
01h
00h
Effects of a RESET
Connection Considerations
Transfer Function
AIN
For the PIC16C433, care must be taken
when using the GP4 pin in A/D conver-
sions due to its proximity to the OSC1 pin.
) is 1 LSb (or Analog V
A/D TRANSFER FUNCTION
Analog Input Voltage
PIC16C433
REF
DS41139B-page 49
/256) (Figure 8-
SS
or V
DD
)