DS80CH11 Maxim, DS80CH11 Datasheet - Page 82

• Manufacturer Part Number: DS80CH11
• Description: The system energy manager is a highly integrated microcontroller that provides several key features for systems including key scanning and control, battery and power management, as well as two 2-Wire serial I/O Ports
• Manufacturer: Maxim

EXTERNAL CLOCK DRIVE Figure 13–6
SERIAL PORT MODE 0 TIMING Figure 13–7
RXD DATA IN
TXD CLOCK
SERIAL PORT 0 (SYNCHRONOUS MODE)
SERIAL PORT 0 (SYNCHRONOUS MODE)
WRITE TO SBUF
DATA OUT
WRITE TO SCON
TO CLEAR RI
DS80CH11
011200 82/88
DATA IN
PSEN
CLOCK
CLOCK
PSEN
RXD
DATA OUT
TXD
CLOCK
ALE
HIGH SPEED OPERATION SM2=1=>TXD CLOCK=XTAL/4
SM2=0=>TXD CLOCK=XTAL/12
RXD
RXD
TXD
TXD
ALE
RI
TI
RI
TI
XTAL1
WRITE TO SCON TO CLEAR RI
WRITE TO SBUF
t
XHDV
t
QVXH
D0
t
XLXL
D0
t
CHCL
D1
t
XHQX
D1
D0
D2
D2
D0
t
CLCX
1/(XTAL FREQ/12)
D3
t
XHDX
D3
t
D4
CLCL
D1
D4
t
CHCX
t
D1
CLCH
D5
D5
D6
D6
D6
D6
D7
D7
D7
D7
TRANSMIT
RECEIVE