Specifications

C8051F330/1
16 Rev. 1.1
Port 0
Latch
UART
8kbyte
FLASH
256 byte
SRAM
POR
SFR Bus
8
0
5
1
C
o
r
e
Timer 0,
1, 2, 3
3-Chnl
PCA/
WDT
P
0
D
r
v
X
B
A
R
Reset
XTAL1
XTAL2
External
Oscillator
Circuit
System Clock
24.5MHz (2%)
Internal
Oscillator
Analog/Digital
Power
Debug HW
SMBus C2D
C2D
CP0
+
-
P0.0
P0.1
P0.2/XTAL1
P0.3/XTAL2
P0.4/TX
P0.5/RX
P0.6
P0.7
VDD
GND
/RST/C2CK
Brown-
Out
P
1
D
r
v
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
SPI
Port 1
Latch
512 byte
XRAM
P2.0/C2D
Port 2
Latch
80 kHz
Internal
Oscillator
Figure 1.2. C8051F331 Block Diagram