Rainbow Electronics T89C51CC01 - Manual (Page 2)

2
T89C51CC01
Rev. D – 17-Dec-01
2. Description
The T89C51CC01 is the first member of the CANary TM family of 8-bit microcontrollers
dedicated to CAN network applications.
In X2 mode a maximum external clock rate of 20 MHz reaches a 300 ns cycle time.
Besides the full CAN controller T89C51CC01 provides 32 Kbytes of Flash memory
including In-System Programming (ISP), 2Kbytes Boot Flash Memory, 2 Kbytes
EEPROM and 1.2 Kbyte RAM.
Primary attention is paid to the reduction of the electro-magnetic emission of
T89C51CC01.
3. Block Diagram
Timer 0 INT
RAM
256x8
T0 T1
Rx
D
Tx
D
WR
RD
EA
PSEN
ALE
XTAL2
XTAL1
UART
CPU
Timer 1
INT
1
Ctrl
INT
0
C51
CORE
Port 0
P0
Port 1 Port 2 Port 3
Parallel I/O Ports & Ext. Bus
P1
(1
)
P2 P3
ERAM
1kx8
IB-bus
PCA
RE
S
E
T
Watch
Dog
PC
A
EC
I
Vs
s
Vc
c
(1): 8 analog Inputs / 8 Digital I/O
Timer2
T2
E
X
T2
Port 4
P4
(2
)
Emul
Unit
10 bit
ADC
Flash
32kx
8
Boot
loader
2kx8
EE
PROM
2kx8
CAN
CONTROLLER
Tx
D
C
Rx
DC
(2): 2-Bit I/O Port