5 Interrupt control (1 CPU Oscillator 411 INTI INTO Timer 2 (8032/8052) Timer 1 Timer 0 Serial port EA RST- Other registers Bus control 128 bytes RAM (8032/8052) 128 bytes RAM (2 ALB PSEN I I I ROM OK-8031 OK-8032 4K-8051 8K-803 V/O ports III Address/data PO P1 P2 P3 Timer 2 (8032/8052) Timer 1 Timer 4 -T2* T2EX Serial (6 port ㅠ TXD RXD *Alternate pin assignments for Pl and TI · ΤΟ

Systems Architecture
7th Edition
ISBN:9781305080195
Author:Stephen D. Burd
Publisher:Stephen D. Burd
Chapter7: Input/output Technology
Section: Chapter Questions
Problem 24VE
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Question

Figure 1 shows a block diagram of the 8051 microcontroller. Briefly describe the
function of each of the numbered elements in the diagram as well as the T0, EA, RST,
ALE, PSEN, and INT0 input/output pins

5
Interrupt
control (1
CPU
Oscillator
INTI
INTO
Timer 2 (8032/8052)
Timer 1
Timer 0
Serial port
EA
RST-
Other
registers
Bus control
128 bytes
RAM
(8032/8052)
128 bytes
RAM (2)
ALB
►PSEN
I
I
ROM
OK-8031
OK-8032
4K-8051
8K - 803
V/O ports
Timer 24-
(8032/8052)
Timer 1
Timer 4
Serial (6
port
T
TXD RXD
-T2
T2EX
TI*
· ΤΟ
PO P1 P2 P3
Address/data Alternate pin assignments for Pl and P3
Transcribed Image Text:5 Interrupt control (1 CPU Oscillator INTI INTO Timer 2 (8032/8052) Timer 1 Timer 0 Serial port EA RST- Other registers Bus control 128 bytes RAM (8032/8052) 128 bytes RAM (2) ALB ►PSEN I I ROM OK-8031 OK-8032 4K-8051 8K - 803 V/O ports Timer 24- (8032/8052) Timer 1 Timer 4 Serial (6 port T TXD RXD -T2 T2EX TI* · ΤΟ PO P1 P2 P3 Address/data Alternate pin assignments for Pl and P3
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