SM89S16R1_06 Datasheet, PDF (25/29 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
IP ($B8H)
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
PT2
PS0
PT1
PX1
PT0
PX0
PT2: Timer2 interrupt priority.
PS0: UART interrupts priority.
PT1: Timer1 interrupt priority.
PX1: external interrupt 1 priority.
PT0: Timer0 interrupt priority.
PX0: external interrupt 0 priority.
The Priority structure and vector locations of interrupts:
Source
External interrupt 0
Timer 0 overflow
External interrupt 1
Timer 1 overflow
UART 0 interrupt
Timer 2 overflow
RTC interrupt
ADC interrupt
Flag
IE0
TF0
IE1
TF1
RI+TI
TF2+EXF2
RTCIF
ADCIF
Priority level
1(highest)
2
3
4
5
6
7
8
Vector Address
03H
0BH
13H
1BH
23H
2BH
43H
4BH
T2MOD ($C9H)
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
T2OE
DCEN
T2CR: Timer 2 Capture Reset. In the Timer2 Capture Mode this bit enables/disables hardware automatically reset
Timer2 while the value in TL2 and TH2 have been transferred into the capture register.
T2OE: Timer2 clock Output Enable bit. If set to 1, the Timer2 clock will output to P1.0.
DCEN: Down Count Enable. When set this bit then allows Timer2 to be configured as an up/down counter.
Application Reference
Valid for SM89S16R1
XI
X'tal
3MHz
6MHz
9MHz
12MHz
C1
30 pF
30 pF
30 pF
22 pF
C2
30 pF
30 pF
30 pF
22 pF
X'tal
SM89S16R1
R
open
open
open
open
R
X'tal
16MHz 25MHz 33MHz 40MHz
X2
C1
30 pF
15 pF
5 pF
2 pF
C1
C2
C2
30 pF
15 pF
5 pF
2 pF
R
open
open
6.8K　
4.7K　
Note:
Oscillation circuit may differs with different crystal or ceramic resonator in higher oscillation frequency which was due to each
crystal or ceramic resonator has its own characteristics.
User should check with the crystal or ceramic resonator manufacturer for appropriate value of external components.
Specifications subject to change without notice contact your sales representatives for the most recent information.
Ver 2.1 SM89S16R1 08/2006
25