PIC16LC923-04/PT Microchip Technology, PIC16LC923-04/PT Datasheet - Page 83

• Manufacturer Part Number: PIC16LC923-04/PT
• Description: IC MCU OTP 4KX14 LCD DVR 64TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16LC923-04/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: I²C, SPI
• Peripherals: LCD, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Size: 7KB (4K x 14)
• Program Memory Type: OTP
• Ram Size: 176 x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 6 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 64-TFQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

12.2
The A/D conversion time per bit is defined as T
A/D conversion requires 9.5 T
The source of the A/D conversion clock is software
selected. The four possible options for T
For correct A/D conversions, the A/D conversion clock
(T
of 1.6 s.
Table 12-1 shows the resultant T
the device operating frequencies and the A/D clock
source selected.
TABLE 12-1: T
Operation
2T
8T
32T
RC
Legend: Shaded cells are outside of recommended range.
Note 1: The RC source has a typical T
AD
1997 Microchip Technology Inc.
OSC
OSC
• 2T
• 8T
• 32T
• Internal RC oscillator
) must be selected to ensure a minimum T
OSC
A/D Clock Source (T
2: These values violate the minimum required T
3: For faster conversion times, the selection of another clock source is recommended.
4: When derived 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 the electrical specifications section.
Selecting the A/D Conversion Clock
OSC
OSC
sleep mode only
OSC
AD
vs. DEVICE OPERATING FREQUENCIES
ADCS1:ADCS0
00
01
10
11
AD
AD
)
AD
per 8-bit conversion.
times derived from
AD
AD
are:
2 - 6 s
time of 4 s.
250 ns
8 MHz
AD
AD
1 s
4 s
. The
time
(1,4)
(2)
AD
time.
2 - 6 s
12.3
The ADCON1 and TRISA registers control the opera-
tion of the A/D port pins. The port pins that are desired
as analog inputs must have their corresponding TRIS
bits set (input). If the TRIS bit is cleared (output), the
digital output level (V
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
configured as analog inputs will read as
cleared (a low level). Pins configured as
digital inputs, will convert an analog input.
Analog levels on a digitally configured
input will not affect the conversion accu-
racy.
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
OH
1.6 s
6.4 s
or V
PIC16C9XX
(1,4)
(3)
OL
) will be converted.
DS30444E - page 83
333.33 kHz
2 - 6 s
24 s
96 s
6 s
(3)
(3)
(1)