24lC16 Device & Word Address

Need you generous helps.

Why my program only can read out the first block 's data of 24LC16?
The other data have been read out are all 0xff.

The following code is my program about how to set device address and word address.

For page write:
I plan to write data at the address 0 of every block.

void WR_MEMO_PAGE(unsigned char PAGE_NUM, unsigned char *MEMO_DATA,
unsigned char PAGE_ADD)

unsigned char TEMP_DATA;
TEMP_DATA = PAGE_START_ADD;
DEVICE_WRITE = ( TEMP_DATA << 1 ) | 0xa0;
START_MEMO();
SHIFT_MEMO(DEVICE_WRITE);
if ( RECACK_MEMO() == 1 ) {
TEMP_DATA = ( TEMP_DATA >> 8 );
SHIFT_MEMO(TEMP_DATA);

For single data write:

void WR_MEMO( unsigned char SHIFT_DATA, unsigned int START_ADD)

unsigned char TRAN_DAT;
DEVICE_WRITE = ((BEG_DAT >> 8)<<1) | 0xa0;
START_MEMO();
SHIFT_MEMO(DEVICE_WRITE);
if ( RECACK_MEMO() == 1 ) {
TRAN_DAT = START_ADD ;
SHIFT_MEMO(TRAN_DAT);

Would you gently to give me some clues?

Thanks.