SM39R16A3 Datasheet, PDF (24/87 Pages) SyncMOS Technologies,Inc – 16KB on-chip program memory

SM39R16A3
8-Bit Micro-controller
with 16KB ISP Flash
& 512B RAM embedded
DPH [7:0]: Data pointer High 0
4.6 Data Pointer 1
The Dual Data Pointer accelerates the moves of data block. The standard DPTR is a 16-bit register that is used to
address external memory or peripherals. In the SM39R16A3 core the standard data pointer is called DPTR, the second
data pointer is called DPTR1. The data pointer select bit chooses the active pointer. The data pointer select bit is
located in LSB of AUX register (DPS).
The user switches between pointers by toggling the LSB of AUX register. All DPTR-related instructions use the
currently selected DPTR for any activity.
Mnemonic: DPL1
7
6
5
4
3
DPL1 [7:0]
Address: 84h
2
1
0 Reset
00h
DPL1[7:0]: Data pointer Low 1
Mnemonic: DPH1
Address: 85h
7
6
5
4
3
2
1
0 Reset
DPH1 [7:0]
00h
DPH1[7:0]: Data pointer High 1
Mnemonic: AUX
Address: 91h
7
6
5
4
3
2
1
0 Reset
BRGS
-
-
-
-
-
-
DPS 00H
DPS: Data Pointer select register.
DPS = 1 is selected DPTR1.
4.7 Clock control register
Mnemonic: CKCON
7
6
5
4
3
-
ITS[2:0]
-
Address: 8Eh
2
1
0 Reset
-
CLKOUT[1:0] 10H
ITS[2:0]: Instruction timing select.
ITS [2:0]
Mode
000
1T mode
001
2T mode (default)
010
3T mode
011
4T mode
100
5T mode
101
6T mode
110
7T mode
111
8T mode
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M065
Ver F SM39R16A3 06/30/2015
- 24 -