SM89S16R1_06 Datasheet, PDF (23/29 Pages) SyncMOS Technologies,Inc – 8-Bits Micro-controller With 64KB Flash ROM & 1KB RAM & RTC & ADC & PWM & PDWU embedded

SyncMOS Technologies International, Inc.
SM89S16R1
8-Bits Micro-controller
With 64KB Flash ROM & 1KB RAM & RTC & ADC & PWM & PDWU embedded
IP1 ($B9H)
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
PADC
PRTC
The interrupt priority can be set at IP1.2 or IP1.3.
PADC: When set to ‘1’, enable the ADC interrupt priority.
PRTC: When set to ‘1’, enable the RTC interrupt priority.
Divider 16384
32768Hz Clock in
<Value>
Divider 2
int 0.5sec
int 1sec
Divider 30
int 0.5min
Divider 2
<Value>
<Value>
<Value>
5 bits shif register
sec0
sec1
sec2
second register sec3
sec4
sec5
<Value>
U2
int 1min
int sel0
int sel1
RTCen
4
3
2
D0
D1
1 ^D2
15
14
13
12
D3
D4
D5
D6
D7
11
10
9
A
B
C
7G
5 bits shif register
min0
min1
min2
minute register min3
min4
min5
74151
<Value>
Y
Y
5
6
int out
Figure 18 The RTC Block Diagram
LED Driving Capability Control
This function is set the sink current more then 10 mA for each pin, 26 mA for whole Port 0, 15 mA for whole Port 1 or
whole Port2 or whole Port3 or whole Port4, and total 71 mA for whole chip.
The SFR show as below:
Port Name
Port0
Port1
Port2
Port3
Port4
SFR Address
$92H
$93H
$94H
$95H
$96H
Iol(max) for total port
26 mA
15 mA
15 mA
15 mA
15 mA
The Power Down Wake Up (PDWU) function
The device can be put into Power Down mode by writing 1 to bit PCON.1. The instruction that does this will be the
last instruction to be executed before the device goes into Power Down mode. In the Power Down mode, all the
clocks are stopped and the device comes to a halt. All activity is completely stopped and the power consumption is
reduced to the lowest possible value. In this state the ALE and PSEN pins are pulled low. The port pins output the
values held by their respective SFRs.
Specifications subject to change without notice contact your sales representatives for the most recent information.
Ver 2.1 SM89S16R1 08/2006
23