T89C51CC01CA-RLTIM Atmel, T89C51CC01CA-RLTIM Datasheet - Page 4
![IC 8051 MCU FLASH 32K 44VQFP](/photos/6/92/69202/313-44-vqfp_sml.jpg)
T89C51CC01CA-RLTIM
Manufacturer Part Number
T89C51CC01CA-RLTIM
Description
IC 8051 MCU FLASH 32K 44VQFP
Manufacturer
Atmel
Series
AT89C CANr
Datasheets
1.T89C51CC01CA-7CTIM.pdf
(167 pages)
2.T89C51CC01CA-7CTIM.pdf
(12 pages)
3.T89C51CC01CA-7CTIM.pdf
(32 pages)
4.T89C51CC01CA-7CTIM.pdf
(29 pages)
Specifications of T89C51CC01CA-RLTIM
Core Processor
8051
Core Size
8-Bit
Speed
40MHz
Connectivity
CAN, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
32
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
For Use With
AT89STK-06 - KIT DEMOBOARD 8051 MCU W/CAN
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
T89C51CC01CARLTIM
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
16. EEPROM
4
Program lock-up can be experienced when using Atmel FLIP software or a custom In system Pogramming tools to
write in the internal EEPROM. This problem occurs with clock frequency > 12MHz in X2 mode or 24MHz in X1 mode.
Neither the code Flash nor the EEPROM are corrupted by the lock-up. Although the EEPROM cannot be written by the
bootloader.
This problem does not affect the capability to erase, read and write into the code Flash and the additional bytes with In-
System Programming as Atmel FLIP.
This problem is bootloader related and doesn’t affect the capability for the user to read and write into the EEPROM.
This problem is technology dependant. The likelyhood of experiencing the problem is low at Clock frequency > 24 MHz
in X1 mode and non-existent below. A reset can be applied to recover from the lock-up.
Workaround
The following process can be done to work around the problem.
C Init EEPROM program example:
T89C51CC01 Errata Sheet
–
Lock-up during ISP write
#define SIZE_EEPROM 12
unsigned char code
tab_eep[SIZE_EEPROM]={0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA};
void main (void)
{
address =0x00;
for (cpt=0; cpt<SIZE_EEPROM; cpt++)
unsigned char xdata * address;
unsigned char cpt;
EEPROM program in
Start the bootloader
EEPROM program
Download a Final
program in flash
Download a Init
flash memory
Start this init
Re-Start the
bootloader
memory
- With hardware condition
- With "start application"
command
- With "start application"
command
- With hardware condition
4131J–CAN–05/06