PIC18C658-I/PT Microchip Technology, PIC18C658-I/PT Datasheet - Page 93

• Manufacturer Part Number: PIC18C658-I/PT
• Description: 32 KB OTP, 1536 RAM, 52 I/O 64 TQFP 10x10x1mm TRAY
• Manufacturer: Microchip Technology
• Series: PIC® 18Cr

Specifications of PIC18C658-I/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: CAN, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 52
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: OTP
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TFQFP
• Processor Series: PIC18C
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 1536 B
• Interface Type: 3-Wire, I2C, SPI, USART, CAN
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 52
• Number Of Timers: 4 bit
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: ICE2000, DM163007, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 6
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT64PT5 - SOCKET TRAN ICE 64MQFP/TQFPAC164319 - MODULE SKT MPLAB PM3 64TQFPDV007003 - PROGRAMMER UNIVERSAL PROMATE II
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: PIC18C658I/PT

8.3
PORTC is an 8-bit wide, bi-directional port. The corre-
sponding Data Direction register is TRISC. Setting a
TRISC bit (=1) will make the corresponding PORTC pin
an input (i.e., put the corresponding output driver in a
hi-impedance mode). Clearing a TRISC bit (=0) will
make the corresponding PORTC pin an output (i.e., put
the contents of the output latch on the selected pin).
Read-modify-write operations on the LATC register,
read and write the latched output value for PORTC.
PORTC is multiplexed with several peripheral functions
(Table 8-5). PORTC pins have Schmitt Trigger input
buffers.
When enabling peripheral functions, care should be
taken in defining TRIS bits for each PORTC pin. Some
peripherals override the TRIS bit to make a pin an out-
FIGURE 8-6:
 2000 Microchip Technology Inc.
PORTC, TRISC and LATC Registers
Note: I/O pins have diode protection to V
Peripheral Enable
Peripheral Out Select
Peripheral Data Out
Peripheral Data In
RD PORTC
WR TRISC
WR LATC
or
WR PORTC
Data Bus
PORTC BLOCK DIAGRAM (PERIPHERAL OUTPUT OVERRIDE)
RC0
RC1
RC2
RC3
RC4
RC5
RC6
RC7
Pin
TRIS Latch
Data
D
D
CK
RD TRISC
CK
Latch
Override
RD LATC
Q
Q
Q
Q
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Advanced Information
DD
Peripheral
Timer1 OSC for Timer1/Timer3
Timer1 OSC for Timer1/Timer3
—
SPI/I
I
SPI Data Out
USART Async Xmit, Sync Clock
USART Sync Data Out
2
and V
C Data Out
TRIS OVERRIDE
2
C Master Clock
SS
Override
TRIS
.
0
1
Q
put, while other peripherals override the TRIS bit to make
a pin an input. The user should refer to the correspond-
ing peripheral section for the correct TRIS bit settings.
The pin override value is not loaded into the TRIS reg-
ister. This allows read-modify-write of the TRIS register,
without concern due to peripheral overrides.
EXAMPLE 8-3:
CLRF
CLRF
MOVLW
MOVWF
EN
D
PORTC
LATC
0xCF
TRISC
Schmitt
Trigger
V
V
N
P
SS
DD
INITIALIZING PORTC
; Initialize PORTC by
; clearing output
; data latches
; Alternate method
; to clear output
; data latches
; Value used to
; initialize data
; direction
; Set RC3:RC0 as inputs
; RC5:RC4 as outputs
; RC7:RC6 as inputs
PIC18CXX8
DS30475A-page 93
I/O Pin