SM89T16R1 Datasheet, PDF (31/34 Pages) SyncMOS Technologies,Inc – 8-Bits Micro-controller With 64KB Flash ROM & IKB RAM & Two UART & RTC & ADC & PWM embedded

SyncMOS Technologies Inc.
SM89T16R1
8-Bits Micro-controller
With 64KB Flash ROM & IKB RAM & Two UART & RTC & ADC & PWM embedded
XT/~RG XTOFF
Internal Clock Source
0
0
Internal RC Oscillator
0
1
Internal RC Oscillator(Ext-Crystal OFF)
1
0
External Crystal
1
1
External Crystal
The Priority structure and vector locations of interrupts:
Source
External interrupt 0
Timer 0 overflow
External interrupt 1
Timer 1 overflow
UART interrupt
Timer 2 overflow
UART 1 interrupt
RTC interrupt
ADC interrupt
External interrupt 2
External interrupt 3
External interrupt 4
External interrupt 5
Flag
IE0
TF0
IE1
TF1
RI+TI
TF2+EXF2
RI_1+TI_1
RTCIF
ADCIF
IE2
IE3
IE4
IE5
Priority level
1(highest)
2
3
4
5
6
7
8
9
10
11
12
13(lowest)
Vector Address
03H
0BH
13H
1BH
23H
2BH
33H
43H
4BH
5BH
63H
6BH
73H
T2MOD ($C9H)
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
HC5
HC4
HC3
HC2
T2CR
T2OE
DCEN
HC5: Hardware Clear /INT5 flag
HC4: Hardware Clear /INT4 flag
HC3: Hardware Clear /INT3 flag
HC2: Hardware Clear /INT2 flag
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 SM89T16R1
X'tal
3MHz
6MHz
9MHz
12MHz
C1
30 pF
30 pF
30 pF
22 pF
C2
30 pF
30 pF
30 pF
22 pF
R
open
open
open
open
X'tal
16MHz 25MHz
C1
30 pF
15 pF
C2
30 pF
15 pF
R
open
open
X'tal
R
C1
C2
XI
SM89T16R1
X2
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.
SM89T16R1 V1.0 JANUARY 2005
31