PIC17C756A MICROCHIP [Microchip Technology], PIC17C756A Datasheet - Page 83

• Manufacturer Part Number: PIC17C756A
• Description: High-Performance 8-bit CMOS EPROM Microcontrollers with 10-bit A/D
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 10-12:
TABLE 10-9:
TABLE 10-10: REGISTERS/BITS ASSOCIATED WITH PORTE
 2000 Microchip Technology Inc.
RE0/ALE
RE1/OE
RE2/WR
RE3/CAP4
Legend: TTL = TTL input, ST = Schmitt Trigger input
15h, Bank 1
14h, Bank 1
14h, Bank 7
15h, Bank 7
16h, Bank 7
Legend:
Note: I/O pin has protection diodes to V
Address
Name
x = unknown, u = unchanged, - = unimplemented, read as '0'. Shaded cells are not used by PORTE.
V
PORTE
DDRE
CA4L
CA4H
TCON3
N
P
DD
Name
PORTE FUNCTIONS
bit0
bit1
bit2
bit3
Data Direction Register for PORTE
Capture4 Low Byte
Capture4 High Byte
Bit
BLOCK DIAGRAM OF RE3/CAP4 PORT PIN
Bit 7
—
—
CA4OVF
Buffer Type
Bit 6
DD
—
TTL
TTL
TTL
ST
and V
Data
Port
CA3OVF
SS
Bit 5
.
—
D
EN
Input/output or system bus Address Latch Enable (ALE) control pin.
Input/output or system bus Output Enable (OE) control pin.
Input/output or system bus Write (WR) control pin.
Input/output or Capture4 input pin.
EN
Q
Q
Q
Q
CA4ED1
Bit 4
Q
—
CK
CK
S
D
D
RE3/CAP4
CA4ED0
Bit 3
RE2/WR
CA3ED1
Bit 2
Function
CA3ED0
RE1/OE
Bit 1
PWM3ON
RE0/ALE
Bit 0
PIC17C7XX
Peripheral In
WR_PORTE
RD_PORTE
WR_DDRE
RD_DDRE
Data Bus
---- xxxx
---- 1111
xxxx xxxx
xxxx xxxx
-000 0000
Value on
POR,
BOR
DS30289B-page 83
MCLR, WDT
---- uuuu
---- 1111
uuuu uuuu
uuuu uuuu
-000 0000