PIC17C756-16/SP Microchip Technology, PIC17C756-16/SP Datasheet - Page 91

• Manufacturer Part Number: PIC17C756-16/SP
• Description: MICRO CTRL 16K MEMORY OTP 64SDIP
• Manufacturer: Microchip Technology
• Series: PIC® 17Cr

Specifications of PIC17C756-16/SP

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 16MHz
• 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 V ~ 6 V
• Data Converters: A/D 12x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 64-SDIP (0.750", 19.05mm)
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Eeprom Size: -
• Other names: PIC17C756-16/P

10.9
PORTJ is an 8-bit wide, bi-directional port. The corre-
sponding data direction register is DDRJ. A ’1’ in DDRJ
configures the corresponding port pin as an input. A ’0’
in the DDRJ register configures the corresponding port
pin as an output. Reading PORTJ reads the status of
the pins, whereas writing to PORTJ will write to the
respective port latch.
PORTJ is a general purpose I/O port.
FIGURE 10-19:
2000 Microchip Technology Inc.
Note: I/O pins have protection diodes to V
PORTJ and DDRJ Registers
(PIC17C76X only)
V
N
P
PORTJ BLOCK DIAGRAM
DD
D
EN
EN
DD
and V
Q
Q
Q
Q
SS
.
CK
CK
D
D
EXAMPLE 10-9:
MOVLB
CLRF
MOVLW
MOVWF
8
PORTJ, F
0xCF
DDRJ
; Select Bank 8
; Initialize PORTJ data
; latches before setting
; the data direction
; register
; Value used to initialize
; data direction
; Set RJ<3:0> as inputs
; RJ<5:4> as outputs
; RJ<7:6> as inputs
INITIALIZING PORTJ
PIC17C7XX
WR_PORTJ
RD_PORTJ
WR_DDRJ
RD_DDRJ
Data Bus
DS30289B-page 91