Z86D99 ZILOG [Zilog, Inc.], Z86D99 Datasheet - Page 9

• Manufacturer Part Number: Z86D99
• Description: Low-Voltage Micro controllers with ADC
• Manufacturer: ZILOG [Zilog, Inc.]

Features
PS003807-1002
Counter/Timers
Input/Output and Interrupts
The Z8 instruction set, consisting of 43 basic instructions, is optimized for high-
code density and reduced execution time. It is similar in form to the ZiLOG Z80
instruction set. The eight instruction types and six addressing modes together
with the ability to operate on bits, 4-bit nibbles or binary coded decimal (BCD) dig-
its, 8-bit bytes, and 16-bit words, make for a code-efficient, flexible microcontroller.
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Four-channel, 8-bit sigma delta analog-to-digital (A/D) converter with external
voltage references (not available in the 28-pin configuration)
Two independent analog comparators
Controlled current output
489 bytes of RAM
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32 Kbytes of OTP memory (Z86D99X)
16 Kbytes of ROM (Z86L99X)
Special architecture to automate generation and reception of complex pulses
or signals:
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One general-purpose 8-bit counter/timer (T1) with 6-bit prescaler
Thirty-two I/Os, twenty-nine of which are bidirectional I/Os with programmable
resistive pull-up transistors (24 I/Os are available in the 28-pin configuration)
Sixteen I/Os are selectable as stop-mode recovery sources
Six interrupt vectors with nine interrupt sources
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233 bytes of general-purpose register-based RAM
256 bytes of RAM mapped into the program memory space that can be
used as data RAM or executable RAM
Programmable 8-bit counter/timer (T8) with two 8-bit capture registers and
two 8-bit load registers
Programmable 16-bit counter/timer (T16) with one 16-bit capture register
pair and one 16-bit load register pair
Programmable input glitch filter for pulse reception
Three external sources
Two comparator interrupts
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Z86D990/Z86D991 OTP and Z86L99X ROM
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Low-Voltage Microcontrollers with ADC
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Y
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