PIC16C558/JW Microchip Technology, PIC16C558/JW Datasheet - Page 29

• Manufacturer Part Number: PIC16C558/JW
• Description: IC MCU EPROM 2KX14 18CDIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C558/JW

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: POR, WDT
• Number Of I /o: 13
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: EPROM, UV
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 18-CDIP (0.300", 7.62mm) Window
• For Use With: ISPICR1 - ADAPTER IN-CIRCUIT PROGRAMMINGDVA16XP180 - ADAPTER DEVICE FOR MPLAB-ICEAC164010 - MODULE SKT PROMATEII DIP/SOIC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

5.3
PORTC is a 8-bit wide latch. All pins have data direc-
tion bits (TRIS registers) which can configure these
pins as input or output.
A '1' in the TRISC register puts the corresponding out-
put driver in a Hi-impedance mode. A '0' in the TRISC
register puts the contents of the output latch on the
selected pin(s).
Reading the PORTC register reads the status of the
pins, whereas writing to it will write to the port latch. All
write operations are read-modify-write operations. So a
write to a port implies that the port pins are first read,
then this value is modified and written to the port data
latch
TABLE 5-5:
TABLE 5-6:
 2002 Microchip Technology Inc.
RC0
RC1
RC2
RC3
RC4
RC5
RC6
RC7
Legend:
07h
87h
Legend:
Note
Address
Name
1:
PORTC and TRISC Registers
x = unknown, u = unchanged
ST = Schmitt Trigger, TTL = TTL input
PORTC
TRISC
PIC16C557 ONLY.
Name
Bit #
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
PORTC FUNCTIONS
SUMMARY OF REGISTERS ASSOCIATED WITH PORTC AND TRISC
TRISC7
Bit 7
RC7
Buffer Type
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TRISC6
Bit 6
RC6
TRISC5
Bi-directional I/O port.
Bi-directional I/O port.
Bi-directional I/O port.
Bi-directional I/O port.
Bi-directional I/O port.
Bi-directional I/O port.
Bi-directional I/O port.
Bi-directional I/O port.
Bit 5
RC5
(1)
TRISC4
Preliminary
Bit 4
RC4
TRISC3
Bit 3
RC3
FIGURE 5-5:
PORTC
TRISC
Data
Bus
WR
WR
RD PORTC
TRISC2
Bit 2
RC2
Data Latch
TRIS Latch
TRISC1
D
CK
D
CK
Function
Bit 1
RC1
Q
Q
Q
Q
TRISC0
RD TRISC
Bit 0
RC0
BLOCK DIAGRAM OF
PORT PINS RC<7:0>
PIC16C55X
Q
xxxx xxxx
1111 1111
Value on
POR
EN
D
DS40143D-page 27
TTL
V
Input
Buffer
V
P
N
SS
DD
uuuu uuuu
1111 1111
Value on
All Other
RESETS
V
V
DD
SS
I/O pin