AT89C51CC03 Atmel Corporation, AT89C51CC03 Datasheet - Page 181

• Manufacturer Part Number: AT89C51CC03
• Manufacturer: Atmel Corporation

Specifications of AT89C51CC03

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 40 MHz
• Cpu: 8051-12C
• Max I/o Pins: 37
• Spi: 1
• Uart: 1
• Can: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 2.25
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART/CAN
• Watchdog: Yes

Timings
Table 1. SPI Interface Master AC Timing
V
Note:
4182O–CAN–09/08
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
DD
CHCH
CHCX
CLCX
SLCH
IVCL
CLIX
CLOV,
CLOX
CLSH
SLOV
SHOX
SHSL
OLOH
OHOL
CHCH
CHCX
CLCX
IVCL
CLIX
CLOV,
CLOX
CLCH
CHCL
= 2.7 to 3.3 V, T
, T
, T
, T
, T
, T
, T
, T
, T
T
T
IVCH
CHIX
IVCH
CHIX
CHOV
CHOV
SLCL
CHSH
Symbol
CHOX
CHOX
1. Value of this parameter depends on prescacler ratio defined in bits 0,1 and 7 of SCON Register.In the above table, the ratio
used is 4. As it can be set also to 8, 16, 32, 64 or 128, the factor of
2TPER-20ns(1)
A
Clock Period
Clock High Time
Clock Low Time
SS Low to Clock edge
Input Data Valid to Clock Edge
Input Data Hold after Clock Edge
Output Data Valid after Clock Edge
Output Data Hold Time after Clock Edge
SS High after Clock Edge
SS Low to Output Data Valid
Output Data Hold after SS High
SS High to SS Low
Output Rise time
Output Fall Time
Clock Period
Clock High Time
Clock Low Time
Input Data Valid to Clock Edge
Input Data Hold after Clock Edge
Output Data Valid after Clock Edge
Output Data Hold Time after Clock Edge
Output Data Rise time
Output Data Fall Time
= -40 to +85°C
will be changed to
Test conditions: capacitive load on all pins= 60 pF.
4TPER-20ns(1)
Parameter
if the prescaler ratio equals 8.
Master Mode
Slave Mode
T
PER
2T
4T
4T
2T
2T
PER
must be changed according to the new ratio.E.g.
PER
PER
PER
PER
Min
+120ns
6
3
3
4
50
50
50
+20ns
-20ns
-20ns
-20ns
0
0
0
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
2T
AT89C51CC03
4T
PER
PER
Max
100
100
100
100
+100ns
50
+20ns
20
(1)
(1)
T
T
T
T
T
T
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
PER
PER
PER
PER
PER
PER
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