COP424C Datasheet, PDF (19/24 Pages) National Semiconductor (TI) – Single-Chip 1k and 2k CMOS Microcontrollers

Power Dissipation (Continued)
Minimum Sink Current
Standard
Minimum Source Current
Low Current Option
Minimum Source Current
COP444C 424C 445C 425C
Low Current Option
Maximum Source Current
COP344C 345C 324C 325C
Low Current Option
Maximum Source Current
Maximum Quiescent Current
FIGURE 12 Input Output Characteristics
TL DD 5259 – 15
Option List
The COP444C 445C 424C 425C COP426C mask-pro-
grammable options are assigned numbers which corre-
spond with the COP444C 424C pins
The following is a list of options The options are pro-
grammed at the same time as the ROM pattern to provide
the user with the hardware flexibility to interface to various
I O components using little or no external circuitry
PLEASE FILL OUT THE OPTION TABLE on the next page
Xerox the option data and send it in with your disk or
EPROM
Option 1e0 Ground Pin no options available
Option 2 CKO Pin
e0 clock generator output to crystal resonator
e1 HALT I O port
e2 general purpose input with load device to V_CC
e3 general purpose input high-Z
Option 3 CKI input
e0 Crystal controlled oscillator input divide by 4
e1 Crystal controlled oscillator input divide by 8
e2 Crystal controlled oscillator input divide by 16
e4 Single-pin RC controlled oscillator (divide by 4)
e5 External oscillator input divide by 4
e6 External oscillator input divide by 8
e7 External oscillator input divide by 16
Option 4 RESET input
e0 load device to V_CC
e1 Hi-Z input
Option 5 L7 Driver
e0 Standard TRI-STATE push-pull output
e1 Low-current TRI-STATE push-pull output
e2 Open-drain TRI-STATE output
Option 6 L6 Driver (same as option 5)
Option 7 L5 Driver (same as option 5)
Option 8 L4 Driver (same as option 5)
Option 9 IN1 input
e0 load device to V_CC
e1 Hi-Z input
Option 10 IN2 input (same as option 9)
Option 11e0 V_CC Pin no option available
Option 12 L3 Driver (same as option 5)
Option 13 L2 Driver (same as option 5)
Option 14 L1 Driver (same as option 5)
Option 15 L0 Driver (same as option 5)
Option 16 SI input (same as option 9)
Option 17 SO Driver
e0 Standard push-pull output
e1 Low-current push-pull output
e2 Open-drain output
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