Z89138 Datasheet, PDF (1/66 Pages) Zilog, Inc. – Voice Processing Controllers

PRELIMINARY CUSTOMER PROCUREMENT SPECIFICATION
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Z89138/
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Z89139 (ROMLESS)
VOICE PROCESSING CONTROLLERS
FEATURES
Device
ROM
(KB)
RAM*
(Bytes)
Z89138
24
256
Z89139
256
Note: *General-Purpose
I/O
Lines
47
47
Voltage
Range
4.5V to 5.5V
4.5V to 5.5V
s Watch-Dog Timer and Power-On Reset
s Improved Low-Power STOP Mode
s On-Chip Oscillator that Accepts a Crystal or External
Clock Drive
s Improved Global Power-Down Mode
s Low-Power Consumption - 200 mW (typical)
s Two Comparators
s RAM and ROM Protect
s On-Board Oscillator for 32.768 kHz Real-Time Clock
s Clock Speeds of 20.48 or 29.49 MHz
s 16-Bit Digital Signal Processor (DSP)
s 6K Word DSP Program ROM
s 512 Words On-Chip DSP RAM
s 8-Bit A/D Converter with up to 16 kHz Sample Rate
s 10-Bit PWM D/A Converter
s Six Vectored, Prioritized Z8 Interrupts
s Three Vectored, Prioritized DSP Interrupts
s Two DSP Timers to Support Different A/D and D/A
Sampling Rates
s IBM^® PC-Based Development Tools
s Developer’s Toolbox for T.A.M. Applications
IBM is a registered trademark of IBM Corporation.
GENERAL DESCRIPTION
The Z89138/Z89139 is a fully integrated, dual processor
controller designed for voice processing applications. The
I/O control processor is a Z8^® 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 accu-
mulator, 512x16 bits of RAM, single cycle instructions, and
6K words of program ROM. The chip also contains a half-
flash 8-bit A/D converter with up to a 16 kHz sample rate
and a 10-bit PWM D/A converter. The sampling rates for
the converters are programmable. The precision of the 8-
bit A/D can be extended by resampling the data at a lower
rate in software. The Z8 and DSP processors are coupled
by mailbox registers and an interrupt system. DSP or Z8
programs can be directed by events in each other’s do-
main.
The Z89139 is the ROMless version of the Z89138. How-
ever, the on-chip DSP is not ROMless.
Notes: All Signals with a preceding front slash, "/", are ac-
tive Low. For example, B//W (WORD is active Low); /B/W
(BYTE is active Low, only).
DS97TAD0201
PRELIMINARY
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