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PIC17C752-08/P Datasheet(PDF) 77 Page - Microchip Technology

Part # PIC17C752-08/P
Description  High-Performance 8-Bit CMOS EPROM Microcontrollers
PDF  320 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC17C752-08/P Datasheet(HTML) 77 Page - Microchip Technology

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© 1997 Microchip Technology Inc.
Preliminary
DS30264A-page 77
PIC17C75X
FIGURE 10-12: BLOCK DIAGRAM OF RE3/CAP4 PORT PIN
TABLE 10-9: PORTE FUNCTIONS
TABLE 10-10: REGISTERS/BITS ASSOCIATED WITH PORTE
Name
Bit
Buffer Type
Function
RE0/ALE
bit0
TTL
Input/Output or system bus Address Latch Enable (ALE) control pin.
RE1/OE
bit1
TTL
Input/Output or system bus Output Enable (OE) control pin.
RE2/WR
bit2
TTL
Input/Output or system bus Write (WR) control pin.
RE3/CAP4
bit3
ST
Input/Output or Capture4 input pin
Legend: TTL = TTL input.
ST = Schmitt Trigger input
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on,
POR,
BOR
Value on all
other resets
(Note1)
15h, Bank 1
PORTE
—
—
—
—
RE3/CAP4
RE2/WR
RE1/OE
RE0/ALE
---- xxxx
---- uuuu
14h, Bank 1
DDRE
Data direction register for PORTE
---- 1111
---- 1111
14h, Bank 7
CA4L
Capture4 low byte
xxxx xxxx
uuuu uuuu
15h, Bank 7
CA4H
Capture4 high byte
xxxx xxxx
uuuu uuuu
16h, Bank 7
TCON3
—
CA4OVF
CA3OVF
CA4ED1
CA4ED0
CA3ED1
CA3ED0
PWM3ON
-000 0000
-000 0000
Legend: x = unknown, u = unchanged, - = unimplemented read as '0'. Shaded cells are not used by PORTE.
Note 1:
Other (non power-up) resets include: external reset through MCLR and the Watchdog Timer Reset.
Note: I/O pin has protection diodes to VDD and Vss.
D
CK
Q
D
CK
Q
S
Port
Data
Data Bus
RD_PORTE
WR_PORTE
RD_DDRE
WR_DDRE
EN
Q
D
EN
P
N
Q
Q
Peripheral In
VDD



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