PIC16F57-E/SP Microchip Technology, PIC16F57-E/SP Datasheet - Page 4

• Manufacturer Part Number: PIC16F57-E/SP
• Description: IC MCU FLASH 2KX12 28-DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F57-E/SP

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: POR, WDT
• Number Of I /o: 20
• Program Memory Size: 3KB (2K x 12)
• Program Memory Type: FLASH
• Ram Size: 72 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

PIC16F57
2.4.3.1
After receiving this command, the chip will load in a
14-bit “data word” when 16 cycles are applied, as
described previously. Because this is a 12-bit core, the
two MSbs of the data word are ignored. A timing
diagram for the Load Data command is shown in
Figure 2-3.
FIGURE 2-3:
2.4.3.2
After receiving this command, the chip will transmit
data bits out of the program memory (user or
configuration) currently addressed, starting with the
second rising edge of the clock input. The data pin will
go into Output mode on the second rising clock edge,
and it will revert to Input mode (high-impedance) after
the 16th rising edge. Because this is a 12-bit core, the
two MSbs of the 14-bit word will be read as ‘1’s.
If the program memory is code-protected (CP = 0),
portions of the program memory will be read as zeros.
See Section 4.0 “Code Protection” for details.
FIGURE 2-4:
DS41208C-page 4
ICSPCLK
ICSPDAT
ICSPCLK
ICSPDAT
Load Data For Program Memory
Read Data From Program Memory
1
1
LOAD DATA COMMAND (PROGRAM/VERIFY)
READ DATA FROM PROGRAM MEMORY COMMAND
0
0
1
T
SET
2
0
1
2
1
T
3
1
SET
T
0
HLD
3
Input
1
T
1
HLD
4
0
0
4
1
5
5
x
x
Preliminary
T
DLY
x
6
6
x
T
1
T
T
DLY
DLY
DLY
2
2
1
1
strt_bit
1
strt_bit
2
2
LSb
LSb
T
3
T
SET
DLY
3
-+T
1
3
HLD
4
1
4
Output
© 2007 Microchip Technology Inc.
5
5
15
MSb stp_bit
15
16
MSb
16
stp_bit
Input