PIC17C756A-33E/L Microchip Technology, PIC17C756A-33E/L Datasheet - Page 45
![IC MCU CMOS 33MHZ 16K EPRM68PLCC](/photos/12/13/121323/c04-049_l_sml.jpg)
PIC17C756A-33E/L
Manufacturer Part Number
PIC17C756A-33E/L
Description
IC MCU CMOS 33MHZ 16K EPRM68PLCC
Manufacturer
Microchip Technology
Series
PIC® 17Cr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC17C752-16L.pdf
(304 pages)
3.PIC17C752-16L.pdf
(6 pages)
Specifications of PIC17C756A-33E/L
Core Processor
PIC
Core Size
8-Bit
Speed
33MHz
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)
4.5 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
68-PLCC
Processor Series
PIC17C
Core
PIC
Data Bus Width
8 bit
Data Ram Size
902 B
Interface Type
I2C, MSSP, RS- 232, SCI, SPI, USART
Maximum Clock Frequency
33 MHz
Number Of Programmable I/os
50
Number Of Timers
8
Operating Supply Voltage
3 V to 5.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
12 bit
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
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC17C756A-33E/L
Manufacturer:
MICROCHIP
Quantity:
12 000
Company:
Part Number:
PIC17C756A-33E/L
Manufacturer:
Microchip Technology
Quantity:
10 000
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7.1.2
When either Microprocessor or Extended Microcontrol-
ler mode is selected, PORTC, PORTD and PORTE are
configured as the system bus. PORTC and PORTD are
the multiplexed address/data bus and PORTE<2:0> is
for the control signals. External components are
needed to demultiplex the address and data. This can
be done as shown in Figure 7-4. The waveforms of
address and data are shown in Figure 7-3. For com-
plete timings, please refer to the electrical specification
section.
FIGURE 7-3:
The system bus requires that there is no bus conflict
(minimal leakage), so the output value (address) will be
capacitively held at the desired value.
As the speed of the processor increases, external
EPROM memory with faster access time must be used.
Table 7-2 lists external memory speed requirements for
a given PIC17C7XX device frequency.
FIGURE 7-4:
<15:0>
2000 Microchip Technology Inc.
ALE
WR
OE
AD
Note 1: Use of I/O pins is only required for paged memory.
’1’
Q1
Address out Data in
PIC17CXXX
2: This signal is unused for ROM and EPROM devices.
3: 16-bit wide devices are now common and could be used instead of 8-bit wide devices.
EXTERNAL MEMORY INTERFACE
AD15-AD8
Q2
Read Cycle
AD7-AD0
I/O
Q3
ALE
WR
OE
(1)
EXTERNAL PROGRAM
MEMORY ACCESS
WAVEFORMS
TYPICAL EXTERNAL PROGRAM MEMORY CONNECTION DIAGRAM
Q4
Q1
Address out
Q2
Q3
Write Cycle
Data out
Q4
AD15-AD0
373
373
Q1
(3)
(3)
A15-A0
In Extended Microcontroller mode, when the device is
executing out of internal memory, the control signals
will continue to be active. That is, they indicate the
action that is occurring in the internal memory. The
external memory access is ignored.
The following selection is for use with Microchip
EPROMs. For interfacing to other manufacturers mem-
ory, please refer to the electrical specifications of the
desired PIC17C7XX device, as well as the desired
memory device to ensure compatibility.
TABLE 7-2:
The electrical specifications now include timing specifi-
cations for the memory interface with PIC17LCXXX
devices. These specifications reflect the capability of
the device by characterization. Please validate your
design with these timings.
PIC17C7XX
Frequency
Note:
Oscillator
138
16 MHz
20 MHz
25 MHz
8 MHz
(1)
The access times for this requires the use
of fast SRAMs.
D7-D0
CE
OE
Ax-A0
Memory
(MSB)
Cycle Time
Instruction
EPROM MEMORY ACCESS
TIME ORDERING SUFFIX
WR
500 ns
250 ns
200 ns
160 ns
(T
(3)
CY
(2)
)
PIC17C7XX
EPROM Suffix
DS30289B-page 45
OE
Ax-A0
D7-D0
Memory
CE
-25
-15
-10
-70
(LSB)
WR
(3)
(2)
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