83C152JD Intel Corporation, 83C152JD Datasheet - Page 5

• Manufacturer Part Number: 83C152JD
• Description: UNIVERSAL COMMUNICATION CONTROLLER 8-BIT MICROCONTROLLER
• Manufacturer: Intel Corporation

DIP
48
24
18-21
25-28
1-8
29-36
10- 17
Pin
PLCC
2
3 33
27-30
34-37
4-11
41-48
14-16
18 19
23-25
(2)
(1)
V
V
Port 0 Port 0 is an 8-bit open drain bidirectional I O port As an output port each pin
can sink 8 LS TTL inputs Port 0 pins that have 1s written to them float and in that
state can be used as high-impedance inputs
external program memory if EBEN is pulled low During accesses to external Data
Memory Port 0 always emits the low-order address byte and serves as the multiplexed
data bus In these applications it uses strong internal pullups when emitting 1s
required during program verification
Port 1 Port 1 is an 8-bit bidirectional I O port with internal pullups Port 1 pins that
have 1s written to them are pulled high by the internal pullups and in that state can be
used as inputs As inputs Port 1 pins that are externally being pulled low will source
current (I
below
P1 0
P1 1
P1 2
P1 3
P1 4
P1 5
P1 6
Port 2 Port 2 is an 8-bit bidirectional I O port with internal pullups Port 2 pins that
have 1s written to them are pulled high by the internal pullups and in that state can be
used as inputs As inputs Port 2 pins that are externally being pulled low will source
current (I
Memory if EBEN is pulled low During accesses to external Data Memory that use 16-
bit addresses (MOVX
address byte In these applications it uses strong internal pullups when emitting 1s
Port 2 emits the contents of the P2 Special Function Register
Port 3 Port 3 is an 8-bit bidirectional I O port with internal pullups Port 3 pins that
have 1s written to them are pulled high by the internal pullups and in that state can be
used as inputs As inputs Port 3 pins that are externally being pulled low will source
current (I
listed below
P3 0
P3 1
P3 2
P3 3
P3 4
P3 5
P3 6
P3 7
CC
SS
Port 0 is also the multiplexed low-order address and data bus during accesses to
Port 0 also outputs the code bytes during program verification External pullups are
Port 1 also serves the functions of various special features of the 8XC152 as listed
Port 2 emits the high-order address byte during fetches from external Program
During accesses to external Data Memory that use 8-bit addresses (MOVX
Port 2 also receives the high-order address bits during program verification
Port 3 also serves the functions of various special features of the MCS-51 Family as
Pin
Pin
Circuit ground
Supply voltage
IL
IL
IL
on the data sheet) because of the internal pullups
on the data sheet) because of the internal pullups
on the data sheet) because of the pullups
GRXD
GTXD
DEN
TXC
RXC
HLD
HLDA
RXD
TXD
INT0
INT1
T0
T1
WR
RD
Name
Name
DPTR and DMA operations) Port 2 emits the high-order
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Pin Description
GSC data input pin
GSC data output pin
GSC enable signal for an external driver
GSC input pin for external transmit clock
GSC input pin for external receive clock
DMA hold input output
DMA hold acknowledge input output
Serial input line
Serial output line
External Interrupt 0
External Interrupt 1
Timer 0 external input
Timer 1 external input
External Data Memory Write strobe
External Data Memory Read strobe
Alternate Function
Alternate Function
8XC152JA JB JC JD
Ri)
5