PIC17C756-16/L Microchip Technology, PIC17C756-16/L Datasheet - Page 171

• Manufacturer Part Number: PIC17C756-16/L
• Description: MICRO CTRL 16K MEMORY OTP 68PLCC
• Manufacturer: Microchip Technology
• Series: PIC® 17Cr

Specifications of PIC17C756-16/L

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: OTP
• Ram Size: 902 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 6 V
• Data Converters: A/D 12x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 68-PLCC
• For Use With: AC164308 - MODULE SKT FOR PM3 68PLCCDVA17XL681 - DEVICE ADAPTER FOR PIC17C752DM173001 - KIT DEVELOPMENT PICDEM17AC174007 - MODULE SKT PROMATEII 68PLCCAC164024 - ADAPTER PICSTART PLUS 68PLCC
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Eeprom Size: -

EXAMPLE 16-1: CALCULATING THE
T
† Only required for temperatures
T
T
T
TABLE 16-1:
TABLE 16-2:
Operation
8T
32T
64T
RC
Legend: Shaded cells are are outside of recommended ranges.
Note 1: The RC source has a typical T
Operation
8T
32T
64T
RC
Legend: Shaded cells are are outside of recommended ranges.
Note 1: The RC source has a typical T
ACQ
ACQ
CAP
ACQ
1997 Microchip Technology Inc.
OSC
OSC
OSC
OSC
OSC
OSC
= -C
= 10 s + Tcap + [(Temp - 25 C)(0.05 s/ C)]
= 10 s + 27.447 s + [(50 C - 25 C)(0.05 s/ C)]
= Amplifier Settling Time +
2: These values violate the minimum required T
3: For faster conversion times, the selection of another clock source is recommended.
4: When the device frequencies is greater than 1 MHz, the RC A/D conversion clock source is only recom-
2: These values violate the minimum required T
3: For faster conversion times, the selection of another clock source is recommended.
4: When the device frequencies is greater than 1 MHz, the RC A/D conversion clock source is only recom-
AD Clock Source (T
AD Clock Source (T
Holding Capacitor Charging Time +
Temperature Coefficient †
-200 pF (1 k + 7 k + 10 k ) ln(0.0004885)
-200 pF (18 k ) ln(0.0004885)
-3.6 s (-7.6241)
27.447 s
37.447 s + 1.25 s
38.697 s
mended for sleep operation.
mended for sleep operation.
HOLD
(R
T
T
IC
ADCS1:ADCS0
ADCS1:ADCS0
AD
AD
MINIMUM REQUIRED
ACQUISITION TIME
+ R
vs. DEVICE OPERATING FREQUENCIES (EXTENDED VOLTAGE DEVICES (LC))
vs. DEVICE OPERATING FREQUENCIES (STANDARD DEVICES (C))
SS
00
01
10
11
00
01
10
11
+ R
AD
AD
)
)
S
) ln(1/2047)
25 C
2 - 6 s
3 - 9 s
AD
AD
242 ns
970 ns
1.0 s
33 MHz
1.94 s
8 MHz
4.0 s
8.0 s
time of 4 s.
time of 4 s.
(1, 4)
(1, 4)
(2)
(2)
(2)
Preliminary
AD
AD
2 - 6 s
3 - 9 s
time.
time.
400 ns
2.0 s
20 MHz
1.6 s
3.2 s
4 MHz
16 s
8 s
16.2
The A/D conversion time per bit is defined as T
A/D conversion requires a minimum 12T
conversion. The source of the A/D conversion clock is
software selected. The four possible options for T
are:
For correct A/D conversions, the A/D conversion clock
(T
of 1.6 s.
Table 16-1 and Table 16-2 show the resultant T
times derived from the device operating frequencies
and the A/D clock source selected. These times are for
standard voltage range devices.
(1, 4)
(1, 4)
(2)
(2)
AD
Device Frequency
Device Frequency
• 8T
• 32T
• 64T
• Internal RC oscillator
) must be selected to ensure a minimum T
Selecting the A/D Conversion Clock
2 - 6 s
3 - 9 s
OSC
12.8 s
OSC
OSC
32 s
5 MHz
2 MHz
1.6 s
6.4 s
16 s
4 s
(1, 4)
(3)
(1, 4)
(3)
2 - 6 s
3 - 9 s
1.25 MHz
25.6 s
51.2 s
32 s
64 s
1 MHz
6.4 s
8 s
(1, 4)
(3)
(3)
(3)
(3)
(1)
DS30264A-page 171
333.33 kHz
333.33 kHz
AD
2 - 6 s
3 - 9 s
192 s
192 s
96 s
96 s
24 s
24 s
per 10-bit
AD
AD
(3)
(3)
(3)
(3)
(1)
(1)
. The
time
AD
AD