Block diagram – Atmel AT89C5132 User Manual
Page 2
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4173ES–USB–09/07
AT89C5132
3.
Block Diagram
Figure 3-1.
AT89C5132 Block Diagram
Notes:
1. Alternate function of Port 3
2. Alternate function of Port 4
3. Alternate function of Port 1
8-BIT INTERNAL BUS
Clock and PLL
Unit
C51 (X2 CORE)
RAM
2304 Bytes
Flash
Interrupt
Handler Unit
FILT
X2
X1
MMC
Interface
I/O
MDAT
P0 - P5
10-bit A-to-D
Converter
V
SS
V
DD
Keyboard
Interface
KIN3:0
I
2
S/PCM
Audio Interface
AVSS
AV
DD
AIN1:0
Ports
INT0
INT1
MOSI
MISO
Timers 0/1
T1
T0
SPI/DataFlash
Controller
MCLK
MCMD
SCK
RST
AREF
DSEL
DCLK
SCLK
DOUT
64K Bytes
USB
Controller
D+
D-
UART
RXD
TXD
IDE
Interface
SS
Watchdog
Flash Boot
4K Bytes
UVSS
UV
DD
and
BRG
1
1
1
1
1
1
2
2
2
2
3
TWI
Controller
SCL SDA
1
1