SyncMOS Technologies International, Inc.
SM89S16R1
8-Bits Micro-controller
With 64KB Flash ROM & 1KB RAM & RTC & ADC & PWM & PDWU embedded
ALE
tWHLH
/PSEN
tLLDV
tLLWL
tRLRH
/RD
PORT0
PORT2
tAVLL
tRLDV
tRLAZ
tRHDZ
tRHDX
DATA IN
tLLAX
A0 - A7 (RI or DPL)
A0 - A7 (PCL)
INSTR IN
tAVDV
tAVWL
A8 - A15 of DPH or PORT2
A8 - A15 (PCH)
Figure 8 External Data Memory read cycle
ALE
tWHLH
/PSEN
tLLWL
tWLWH
/WR
tQVWH
tQVWX
DATA OUT
tAVLL
A0 - A7 (RI or DPL)
tLLAX
tWHQX
PORT0
PORT2
A0 - A7 (PCL)
INSTR IN
tAVWL
A8 - A15 of DPH or PORT2
A8 - A15 (PCH)
Figure 9 External Data Memory write cycle
Instruction
ALE
0
1
2
3
4
5
6
7
8
tXLXL
CLOCK
TXD
tQVXH
0
tXHQX
1
2
3
4
5
6
7
tXHDV
VALID
tXHDX
Set_RI
VALID
RxD
VALID
VALID
VALID
VALID
VALID
VALID
Figure10 UART waveform in Shift Register MODE
Specifications subject to change without notice contact your sales representatives for the most recent information.
Ver 2.1 SM89S16R1 08/2006
12
SYNCMOS [ SYNCMOS TECHNOLOGIES,INC ]
