SM59R16A2 Datasheet, PDF (18/67 Pages) SyncMOS Technologies,Inc – 8-Bit Micro-controller

SM59R16A2/SM59R08A2
8-Bit Micro-controller
64KB/32KB ISP Flash & 2KB RAM embedded
3.2.2 Data memory - higher 128 byte (80h to FFh)
The address 80h to FFh can only be accessed by indirect addressing mode. It is data area.
3.2.3 Data memory - Expanded 2048 bytes ($0000 to $07FF)
From external address 0000h to 07FFh is the on-chip expanded SRAM area, total 2048 Bytes. This
area can be accessed by external direct addressing mode (by instruction MOVX).
If the address of instruction MOVX @DPTR is larger than 07FFh，the SM59R16A2 will generate the
external memory control signal automatically.
If the SFR IFCON [1] = 1, this 2KB on-chip SRAM will be disabled as if there is no such embedded
memory. The default value for IFCON [1] is 0.
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M034
18
Ver.B SM59R16A2/SM59R08A2 06/2009