PIC16LC773-I/SP Microchip Technology, PIC16LC773-I/SP Datasheet - Page 35
![IC MCU OTP 4KX14 A/D PWM 28DIP](/photos/6/59/65908/150-28-dip_sml.jpg)
PIC16LC773-I/SP
Manufacturer Part Number
PIC16LC773-I/SP
Description
IC MCU OTP 4KX14 A/D PWM 28DIP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Specifications of PIC16LC773-I/SP
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
22
Program Memory Size
7KB (4K x 14)
Program Memory Type
OTP
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.5 V ~ 5.5 V
Data Converters
A/D 6x12b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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3.5
This section is applicable to the 40/44-pin devices only.
PORTE has three pins RE0/RD/AN5, RE1/WR/AN6
and RE2/CS/AN7, which are individually configurable
as inputs or outputs. These pins have Schmitt Trigger
input buffers.
I/O PORTE becomes control inputs for the micropro-
cessor port when bit PSPMODE (TRISE<4>) is set. In
this mode, the user must make sure that the
TRISE<2:0> bits are set (pins are configured as digital
inputs). Ensure ADCON1 is configured for digital I/O. In
this mode the input buffers are TTL.
Figure 3-12
trols the parallel slave port operation.
PORTE pins are multiplexed with analog inputs. When
selected as an analog input, these pins will read as ’0’s.
TRISE controls the direction of the RE pins, even when
they are being used as analog inputs. The user must
make sure to keep the pins configured as inputs when
using them as analog inputs.
FIGURE 3-12: TRISE REGISTER (ADDRESS 89h)
Note:
bit7
1999 Microchip Technology Inc.
bit 7 :
bit 6:
bit 5:
bit 4:
bit 3:
bit 2:
bit 1:
bit 0:
R-0
IBF
PORTE and TRISE Register
On a Power-on Reset these pins are con-
figured as analog inputs.
IBF: Input Buffer Full Status bit
1 = A word has been received and is waiting to be read by the CPU
0 = No word has been received
OBF: Output Buffer Full Status bit
1 = The output buffer still holds a previously written word
0 = The output buffer has been read
IBOV: Input Buffer Overflow Detect bit (in microprocessor mode)
1 = A write occurred when a previously input word has not been read (must be cleared in software)
0 = No overflow occurred
PSPMODE: Parallel Slave Port Mode Select bit
1 = Parallel slave port mode
0 = General purpose I/O mode
Unimplemented: Read as '0'
PORTE Data Direction Bits
Bit2: Direction Control bit for pin RE2/CS/AN7
1 = Input
0 = Output
Bit1: Direction Control bit for pin RE1/WR/AN6
1 = Input
0 = Output
Bit0: Direction Control bit for pin RE0/RD/AN5
1 = Input
0 = Output
shows the TRISE register, which also con-
OBF
R-0
R/W-0
IBOV
PSPMODE
R/W-0
Advance Information
U-0
—
R/W-1
bit2
FIGURE 3-11: PORTE BLOCK DIAGRAM (IN
Note 1: I/O pins have protection diodes to V
R/W-1
bit1
Data
bus
WR
TRIS
WR
PORT
RD PORT
R/W-1
TRIS Latch
Data Latch
bit0
D
D
CK
CK
bit0
RD TRIS
I/O PORT MODE)
Q
Q
R = Readable bit
W = Writable bit
U = Unimplemented bit,
- n = Value at POR reset
PIC16C77X
Q
read as ‘0’
EN
Schmitt
Trigger
input
buffer
EN
D
DS30275A-page 35
DD
I/O pin
and V
SS
(1)
.
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