PIC16C72-04I/SO Microchip Technology, PIC16C72-04I/SO Datasheet - Page 57

• Manufacturer Part Number: PIC16C72-04I/SO
• Description: IC MCU OTP 2KX14 A/D PWM 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C72-04I/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: OTP
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 6 V
• Data Converters: A/D 5x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• For Use With: XLT28SO-1 - SOCKET TRANSITION 28SOIC 300MIL309-1024 - ADAPTER 28-SOIC TO 28-DIP309-1023 - ADAPTER 28-SOIC TO 28-DIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

9.2
The A/D conversion time per bit is defined as T
A/D conversion requires 9.5T
The source of the A/D conversion clock is software
selectable. The four possible options for T
For correct A/D conversions, the A/D conversion clock
(T
of 1.6 s.
Table 9-1 shows the resultant T
the device operating frequencies and the A/D clock
source selected.
TABLE 9-1
Operation
2T
8T
32T
RC
Legend: Shaded cells are outside of recommended range.
Note 1: The RC source has a typical T
AD
1998 Microchip Technology Inc.
OSC
OSC
(5)
• 2T
• 8T
• 32T
• Internal RC oscillator
) must be selected to ensure a minimum T
OSC
2: These values violate the minimum required T
3: For faster conversion times, the selection of another clock source is recommended.
4: When device frequency is greater than 1 MHz, the RC A/D conversion clock source is recommended for
5: For extended voltage devices (LC), please refer to Electrical Specifications section.
AD Clock Source (T
Selecting the A/D Conversion Clock
OSC
OSC
sleep operation only.
OSC
T
AD
ADCS1:ADCS0
vs. DEVICE OPERATING FREQUENCIES
00
01
10
11
AD
AD
)
AD
per 8-bit conversion.
times derived from
AD
AD
2 - 6 s
time of 4 s.
are:
100 ns
400 ns
20 MHz
1.6 s
AD
AD
. The
time
Preliminary
(1,4)
(2)
(2)
AD
time.
2 - 6 s
9.3
The ADCON1, TRISA, and TRISE registers control the
operation of the A/D port pins. The port pins that are
desired as analog inputs must have their correspond-
ing TRIS bits set (input). If the TRIS bit is cleared (out-
put), the digital output level (V
converted.
The A/D operation is independent of the state of the
CHS2:CHS0 bits and the TRIS bits.
400 ns
5 MHz
1.6 s
6.4 s
Note 1: When reading the port register, all pins
Note 2: Analog levels on any pin that is defined as
Device Frequency
(1,4)
(2)
Configuring Analog Port Pins
PIC16C72 Series
configured as analog input channels will
read as cleared (a low level). Pins config-
ured as digital inputs, will convert an ana-
log input. Analog levels on a digitally
configured input will not affect the conver-
sion accuracy.
a digital input (including the AN4:AN0
pins), may cause the input buffer to con-
sume current that is out of the devices
specification.
2 - 6 s
1.25 MHz
25.6 s
1.6 s
6.4 s
(1,4)
(3)
OH
DS39016A-page 57
or V
333.33 kHz
2 - 6 s
24 s
96 s
6 s
OL
) will be
(3)
(3)
(1)