SM59A16U1
8-Bit Micro-controller
64KB with ISP Flash
& 6K+256B RAM embedded
3. Memory Structure
The SM59A16U1 memory structure follows general 8052 structure. It is integrate the expanded 6KB data memory and
64KB program memory.
3.1
Program Memory
The SM59A16U1 has 64KB on-chip flash memory which can be used as general program memory or EEPROM, on
which include up to 4K byte specific ISP service program memory space. The address range for the 64K byte is $0000
to $FFFF. The address range for the ISP service program is $F000 to $FFFF. The ISP service program size can be
partitioned as N blocks of 256 byte (N=0 to 16). When N=0 means no ISP service program space available, total 64K
byte memory used as program memory. When N=1 means address $FF00 to $FFFF reserved for ISP service program.
When N=2 means memory address $FE00 to $FFFF reserved for ISP service program…etc. Value N can be set and
programmed into SM59A16U1 by the writer or ICP. It can be used to record any data as EEPROM. The procedure of
this EEPROM application function is described in the section 21 on internal ISP. As shown in Fig. 3-1
FFFF
FF00
FE00
FD00
FC00
FB00
FA00
F900
F800
F700
F600
F500
F400
F300
F200
F100
F000
N=0
N=1
N=2
N=3
N=4
N=5
N=6
N=7
N=8
N=9
N=10
N=11
N=12
N=13
N=14
N=15
N=16
ISP service
Program space,
Up to 4K
64K Program
Memory space
0000
Fig. 3-1: SM59A16U1 programmable Flash
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M071 Ver A SM59A16U1 04/12/2013
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SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
