DS80CH11 Maxim, DS80CH11 Datasheet - Page 10

• 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

DS80CH11
011200 10/88
PIN
109
110
112
113
114
115
116
100
103
104
111
87
88
89
90
91
92
93
94
95
96
97
98
99
77
78
79
80
81
82
83
84
P3.1 (TXD0)
P1.1 (T2EX)
P3.0(RXD0)
P4.0 (KSI.0)
P4.1 (KSI.1)
P4.2 (KSI.2)
P4.3 (KSI.3)
P4.4 (KSI.4)
P4.5 (KSI.5)
P4.6 (KSI.6)
P4.7 (KSI.7)
P3.2 (INT0)
P3.3 (INT1)
P1.3 SDA1
P1.5 SDA2
P1.2 SCL1
P1.4 SCL2
P2.2 (A10)
P2.3 (A11)
P2.4 (A12)
P2.5 (A13)
P2.6 (A14)
P2.7 (A15)
P3.6 (WR)
P3.7 (RD)
SYMBOL
P1.0 (T2)
P2.0 (A8)
P2.1 (A9)
P3.4 (T0)
P3.5 (T1)
P1.6
P1.7
Port 1/ (Alternate Functions): – I/O. Port 1 provides eight lines which can be individu-
ally selected as bi–directional I/O port pins or as the alternate functions listed below:
Port
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
Note that P1.7 – P1.2 are high–drive pins which are always open–drain and must be
used with external pull–ups when used as I/O port pins. P1.1 and P1.0 have internal
pull–up resistors.
Port 2 / Address Outputs A15–8: – I/O. Port 2 is a pseudo–bi–directional I/O port with
internal pull–up resistors. As an alternate function Port 2 can function as MSB of the
external address bus.
Port 3 / (Alternate Functions): – I/O. Port 3 provides eight lines each of which can
serve as psuedo–bi–directional I/O port pins or as the alternate functions as listed
below. Internal pull–up resistors are always present on these pins.
Port
P3.0
P3.1
P3.2
P3.3
P3.4
P3.5
P3.6
P3.7
Port 4 / KSI.7–0: – I/O / Keyboard Scan Inputs. Port 4 provides eight lines which can be
individually selected as psuedo–bi–directional I/O port pins or as an interrupt Inputs for
key scanning. Port 4 pins incorporate Schmitt inputs with pull–up resistors.
Alternate
Function
T2
T2EX
SCL1
SDA1
SCL2
SDA2
(None)
(None)
Alternate
Function
RXD0
TXD0
INT0
INT1
T0
T1
WR
RD
DESCRIPTION
Description
External I/O for Timer/Counter 2
Timer/Counter 2 Capture/Reload Trigger
2–Wire Serial Clock 1
2–Wire Serial Data 1
2–Wire Serial Clock 2
2–Wire Serial Data 2
Description
Serial Port 0 Input
Serial Port 0 Output
External Interrupt 0
External Interrupt 1
Timer 0 External Input
Timer 1 External Input
External Data Memory Write Strobe
External Data Memory Read Strobe