3 Block Diagram
Figure 3-1 shows the functional block diagram of the MPC82G516A. It gives the outline of the device. The user
can easily find all the device’s peripheral functions in the diagram.
Figure 3-1. Block Diagram
MPC82G516A
VDD
VSS
V30
RST
LDO Regulator
and Power
Monitoring
High-Performance
1-T 80C51 CPU
Internal
Bus
On-Chip Debug
Interface
(for ICE & ICP)
OCD_SDA
OCD_SCL
64K Bytes
Code Flash
256 Bytes
Internal RAM
1024 Bytes
eXpanded RAM
(XRAM)
P0[7:0]
Timer0
Timer1
Timer2
Serial
Port
Secondary
UART
PCA
SPI
ADC
Keypad
Interrupt
Interrupt
Handler
8
6
T0 (P3.4)
T1 (P3.5)
T2 (P1.0)
T2EX (P1.1)
T0CKO (P3.4)
T2CKO (P1.0)
TXD (P3.1)
RXD (P3.0)
S2TXD (P1.3)
S2RXD (P1.2)
S2CKO (P3.5)
CEX0~CEX5 (P1.2~P1.7)
ECI (P1.1)
MISO (P1.6)
MOSI (P1.5)
SPICLK (P1.7)
/SS (P1.4)
AIN0~AIN7 (P1.0~P1.7)
Configurable
I/O Port, P0
Configurable
I/O Port, P1
Configurable
I/O Port, P2
Configurable
I/O Port, P3
Configurable
I/O Port, P4
System Clock
Divider
System
and
CPU
Clock
P1[7:0]
P2[7:0]
P3[7:0]
8
KBI0~KBI7 (P2.0~P2.7)
/INT0 (P3.2)
/INT1 (P3.3)
/INT2 (P4.3)
/INT3 (P4.2)
P4[7:0]
Watchdog
Timer
8
Crystal or
Resonator
XTAL1
XTAL2
Oscillating
Circuitry
~6MHz
External
Data Memory
Accessing
8
AD[7:0] (P0)
A[15:8] (P2)
ALE (P3.5 or P4.1)
/WR (P3.6)
/RD (P3.7)
Built-in RC
Oscillator
MEGAWIN
MPC82G516A Data Sheet
10
MEGAWIN [ MEGAWIN TECHNOLOGY CO., LTD ]
