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Z89136 Datasheet

  • Z89136

  • Low-Cost DTAD Controller

  • 328.28KB

  • 66頁

  • ZILOG   ZILOG

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P
RELIMINARY
P
RODUCT
S
PECIFICATION
1
Z89135/Z89136
L
OW
-C
OST
DTAD C
ONTROLLER
FEATURES
Device
Z89135
Z89136
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
1
ROM
(KB)
24
24
RAM*
(Bytes)
256
256
I/O
Lines
47
47
Speed
(MHz)
20
20
Clock Speed of 20.48 MHz
16-Bit Digital Signal Processor (DSP)
6K Word DSP Program ROM
512 Words On-Chip DSP RAM
8-Bit A/D Converter with up to 128 kHz Sample Rate
10-Bit PWM D/A Converter (4 kHz to 64 kHz)
Three Vectored, Prioritized DSP Interrupts
Two DSP Timers to Support Different A/D and
D/A Sampling Rates
Z8 and DSP Operation in Parallel
IBM
廬
PC-Based Development Tools
Developer鈥檚 Toolbox for T.A.M. Applications
24 KB of Z8 Program ROM (Z89135)
Watch-Dog Timer and Power-On Reset
Low Power STOP Mode
On-Chip Oscillator which Accepts a Crystal or External
Clock Drive
Two 8-Bit Z8 Counter Timers with 6-Bit Prescaler
Global Power-Down Mode
Low Power Consumption - 200 mW (typical)
Two Comparators with Programmable Interrupt Priority
Six Vectored, Priority Z8 Interrupts
RAM and ROM Protect
s
s
s
s
s
s
IBM is a registered trademark of International Business
Machines Corp.
GENERAL DESCRIPTION
The Z89135/136 is a fully integrated, dual processor con-
troller designed for low-cost digital telephone answering
machines. The I/O control processor is a Z8
廬
MCU with 24
KB of program memory, two 8-bit counter/timers, and up to
47 I/O pins. The DSP is a 16-bit processor with a 24-bit
ALU and accumulator, 512 x 16 bits of RAM, single cycle
instructions, and 6K word program ROM plus constants
memory. The chip also contains a half-flash 8-bit A/D con-
verter with up to 128 kHz sample rate and 10-bit PWM D/A
converter. The sampling rates for the converters are pro-
grammable. The precision of the 8-bit A/D may be extend-
ed by resampling the data at a lower rate in software.
The Z8 and DSP processors are coupled by mailbox regis-
ters and an interrupt system, which allows DSP or Z8 pro-
grams to be directed by events in each other鈥檚 domain.
The Z89136 is the ROMless version of the Z89135. The
DSP is not ROMless. The DSP's program memory is al-
ways the internal ROM.
DS97TAD0300
PRELIMINARY
1-1

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