z8f1621 ZiLOG Semiconductor, z8f1621 Datasheet - Page 19

• Manufacturer Part Number: z8f1621
• Description: High Performance 8-bit Microcontrollers
• Manufacturer: ZiLOG Semiconductor

PS019921-0308
I
Serial Peripheral Interface
Timers
Interrupt Controller
Reset Controller
On-Chip Debugger
DMA Controller
2
C
The I
controller consists of two bidirectional bus lines, a serial data (SDA) line and a serial clock
(SCL) line.
The serial peripheral interface allows the Z8 Encore! XP 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.
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
operate 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.
The Z8 Encore! XP
consist of 12 internal and 12 GPIO pins. The interrupts have 3 levels of programmable
interrupt priority.
The Z8 Encore! XP can be reset using the RESET pin, Power-On Reset, Watchdog Timer,
STOP mode exit, or Voltage Brownout (VBO) warning signal.
The Z8 Encore! XP features an integrated On-Chip Debugger. 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
communication to the OCD.
The Z8 Encore! XP
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.
2
C controller makes the Z8 Encore! XP compatible with the I
®
®
F64XX Series products support up to 24 interrupts. These interrupts
F64XX Series feature three channels of DMA. Two of the channels
Z8 Encore! XP
Product Specification
2
C protocol. The I
®
F64XX Series
Introduction
2
C
5