SyncMOS Technologies International, Inc.
SM89T16R1
8-Bits Micro-controller
With 64KB Flash ROM & 1KB RAM & Two UART & RTC & ADC & PWM embedded
t LHLL
ALE
t LLPL
t PLPH
t AVLL
t PLIV
/PSEN
t PLAZ
t LLAX
t PXIZ
t PXIX
t LLIV
PORT0
PORT2
A0-A7
t AVIV2
t AVIV1
INSTR IN
A0-A7
A8-A15
A8-A15
A8-A15
Figure 7 External Program Memory Read Cycle
t LLHL2
t LLDV
ALE
t WHLH
/PSEN
t LLWL
t LLAX1
t RLRH
t RLDV
/RD
t AVLL
t RLAZ
t RHDZ
t RHDX
DATA IN
t AVWL1
A0-A7
PORT0 Instruction IN
A0-A7
t AVIV1
t AVIV2
PORT2
A8-A15
A8-A15
A8-A15
Figure 8 External Data Memory Read cycle
t LLHL2
ALE
t WHLH
/PSEN
t LLAX2
t LLWL
t WLWH
/WR
t AVLL
t QVWX
t AVWL1
A0-A7
t AVDV2
t LWHQX
PORT0 Instruction IN
DATA OUT
A0-A7
PORT2
A8-A15
A8-A15
A8-A15
Figure 9 External Data Memory Write cycle
UART (Synchronous Mode)
High Speed Operation SM2=1 => TXD Clock =XTAL/4
ALE
/PSEN
WRITE_TO_SBUF
t
QVXH
TXD_DATA_OUT
TXD_CLOCK
D0
D1
D2
D3
D4
D5
D6
D7
D8
t
t
XHDX
XHQX
t
XLXL
TI
WRITE_TO_SCON_TO_CLEAN_RI
RXD_DATA_IN
D0
D1
D2
D3
D4
D5
D6
D7
D8
t
XHDV
TXD_CLOCK
RI
Figure 10 UART Mode 1Timing
Specifications subject to change without notice contact your sales representatives for the most recent information.
Ver 2.1 SM89T16R1 08/2006
12
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
