User manual

ZiLOG Worldwide Headquarters • 532 Race Street • San Jose, CA 95126
Telephone: [phone] • Fax: [phone] • www.ZiLOG.com
Product Block Diagram
Features
• 2.0 to 3.6V operation
• Low power consumption–6mW (typical)
• Three standby modes:
– STOP—2µA (typical)
– HALT—0.8mA (typical)
– Low voltage reset
• Special architecture to automate both genera-
tion and reception of complex pulses or sig-
nals:
– One programmable 8-bit counter/timer
with two capture registers and two load
registers
– One programmable 16-bit counter/timer
with one capture register and two reload
registers
– Programmable input glitch filter for pulse
reception
• Six priority interrupts
– Three external
– Two assigned to counter/timers
– One low-voltage detection interrupt
• Low voltage detection and high voltage detec-
tion flags
• Programmable Watch-Dog Timer (WDT)
• Power-On Reset (POR) circuits
• Two independent comparators with program-
mable interrupt polarity
• Programmable ROM options
– Port 0: 0–3 pull-up transistors
– Port 0: 4–7 pull-up transistors
– Port 1: 0–3 pull-up transistors
– Port 1: 4–7 pull-up transistors
– Port 2: 0–7 pull-up transistors
– Port 3: 0–3 pull-ups
– WDT enabled at POR
• Standard (0° to +70°C), Extended (-40° to
+105°C) and Automotive (-40° to +125°C)
temperature ranges
General Description
The ZGR323L is an ROM-based member of the
ZiLOG
®
MCU family of general purpose micro-
controllers. With 237 bytes of general-purpose
RAM and up to 32KB of ROM, ZiLOG’s CMOS
microcontrollers offer fast-executing use of mem
-
ory, sophisticated interrupts, input/output bit
manipulation, automated pulse generation/recep
-
tion, and internal key-scan pull-up transistors.
Compatible with ZGR163L/ZGP323L families.
Watch-Dog
Timer
Up to
32KB ROM
Power-On
Reset
T8 Timer
Capture & Transmit
Z8
®
Core
2
Compar-
ators
T16 Timer
Capture & Transmit
Low Battery Voltage
Detection
237B General-Purpose
RAM
High Battery Voltage
Detection
Port 0
8 I/O
Port 1
8 I/O
Port 2
8 I/O
Port 3
8 I/O
Z8 GP
TM
Microcontrollers
PB015303-0605
ZGR323L ROM MCU Family
Product Brief
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