Z8F6421PM020SC Datasheet, PDF (25/299 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers Z8 Encore-R 64K Series

Z8 Encore!^® 64K Series
Product Specification
5
I²C
The inter-integrated circuit (I²C^®) controller makes the Z8 Encore!^® compatible with the
I²C protocol. The I²C controller consists of two bidirectional bus lines, a serial data (SDA)
line and a serial clock (SCL) line.
Serial Peripheral Interface
The serial peripheral interface (SPI) allows the Z8 Encore!^® to exchange data between
other peripheral devices such as EEPROMs, A/D converters and ISDN devices. The SPI is
a full-duplex, synchronous, character-oriented channel that supports a four-wire interface.
Timers
Up to four 16-bit reloadable timers can be used for timing/counting events or for motor
control operations. These timers provide a 16-bit programmable reload counter and oper-
ate in One-Shot, Continuous, Gated, Capture, Compare, Capture and Compare, and PWM
modes. Only 3 timers (Timers 0-2) are available in the 44-pin packages.
Interrupt Controller
The 64K Series products support up to 24 interrupts. These interrupts consist of 12 inter-
nal and 12 general-purpose I/O pins. The interrupts have 3 levels of programmable inter-
rupt priority.
Reset Controller
The Z8 Encore!^® can be reset using the RESET pin, power-on reset, Watch-Dog Timer
(WDT), STOP mode exit, or Voltage Brown-Out (VBO) warning signal.
On-Chip Debugger
The Z8 Encore!^® features an integrated On-Chip Debugger (OCD). The OCD provides a
rich set of debugging capabilities, such as reading and writing registers, programming the
Flash, setting breakpoints and executing code. A single-pin interface provides communi-
cation to the OCD.
DMA Controller
The 64K Series features three channels of DMA. Two of the channels are for register
RAM to and from I/O operations. The third channel automatically controls the transfer of
data from the ADC to the memory.
PS019915-1005
Introduction