sae81c80a Infineon Technologies Corporation, sae81c80a Datasheet - Page 4

• Manufacturer Part Number: sae81c80a
• Description: Cmos Dual-port Ram
• Manufacturer: Infineon Technologies Corporation

Pin No.
27
28
44
1
43
19
20
21
22
16
17
18
26
23
24
25
Semiconductor Group
Symbol Function
RES
PD
V
V
N.C.
XTAL1
XTAL2
CLKQ
WDO
WD1
WD2
WD3
V
Int1
Int2
Int3
SS
DD
SS
Reset input
Resets the IC to a defined initial state when RES is low. At the
same time the outputs WD1, WD2, WD3 are switched low for the
duration of the reset pulse. The oscillator continues to operate.
Power down
Disables all other inputs and the oscillator when PD is low.
Negative supply voltage
Positive supply voltage
Not connected
Pin for crystal (must remain open for external clock supply).
Pin for crystal or applying external clock
Clock output
Oscillator watchdog (open-drain output)
High indicates that the oscillator is working.
Open-drain
outputs of
three timers
No function (must be connected)
Open-drain outputs
Outputs that can be controlled via the port for triggering an
interrupt on a processor for example.
4
SAE 81C80 A