PIC17LC756-08/L Microchip Technology, PIC17LC756-08/L Datasheet - Page 89
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PIC17LC756-08/L
Manufacturer Part Number
PIC17LC756-08/L
Description
MICRO CTRL 16K LOW PWR 68PLCC
Manufacturer
Microchip Technology
Series
PIC® 17Cr
Specifications of PIC17LC756-08/L
Core Processor
PIC
Core Size
8-Bit
Speed
8MHz
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)
3 V ~ 6 V
Data Converters
A/D 12x10b
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
68-PLCC
Lead Free Status / RoHS Status
Request inventory verification / Request inventory verification
Eeprom Size
-
- Current page: 89 of 304
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10.8
PORTH is an 8-bit wide, bi-directional port. The corre-
sponding data direction register is DDRH. A ’1’ in
DDRH configures the corresponding port pin as an
input. A ’0’ in the DDRH register configures the corre-
sponding port pin as an output. Reading PORTH reads
the status of the pins, whereas writing to PORTH will
write to the respective port latch.
The upper four bits of PORTH are multiplexed with
4 channels of the 10-bit A/D converter.
The remaining bits of PORTH are general purpose I/O.
Upon RESET, RH7:RH4 are automatically configured
as analog inputs and must be configured in software to
be a digital I/O.
FIGURE 10-17:
2000 Microchip Technology Inc.
WR PORTH
WR DDRH
RD PORT
PCFG3:PCFG0
V
CHS3:CHS0
Note: I/O pins have protection diodes to V
Data Bus
AIN
PORTH and DDRH Registers
(PIC17C76X only)
BLOCK DIAGRAM OF RH7:RH4
Data Latch
DDRH Latch
D
CK
D
CK
RD DDRH
Q
Q
Q
Q
DD
and V
SS
Q
.
To other pads
To other pads
EN
EN
D
EXAMPLE 10-8:
MOVLB
MOVLW
MOVPF
CLRF
MOVLW
MOVWF
8
0x0E
ADCON1
PORTH, F
0x03
DDRH
V
V
P
N
DD
SS
INITIALIZING PORTH
PIC17C7XX
; Select Bank 8
; Configure PORTH as
; digital
; Initialize PORTH data
;
;
;
; Value used to init
;
; Set RH<1:0> as inputs
;
latches before
the data direction
register
data direction
RH<7:2> as outputs
ST
Input
Buffer
DS30289B-page 89
I/O pin
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