Z86C9620VSC datasheet(20/46 Pages) ZILOG

20 / 46 page

Z86C61/62/96

Z8® MICROCONTROLLER

FUNCTIONAL DESCRIPTION (Continued)

registers, 236 general-purpose registers and 16 control

and status registers (Figure 18). There are eight further

registers for I/O ports 4, 5 and 6 in the Expanded Register

File (Bank F, R9-R2) (Figure 20).

The instructions can access registers directly or indirectly

through an 8-bit address field. The Z86C61/62/96 also

allows short 4-bit register addressing using the Register

Pointer (Figure 19). In the 4-bit mode, the Register File is

divided into 16 working register groups, each occupying

16 continuous locations. The Register Pointer addresses

the starting location of the active working-register group.

Stack Pointer (Bits 7-0)

R255

Stack Pointer (Bits 15-8)

Program Control Flags

Interrupt Mask Register

Interrupt Request Register

Interrupt Priority Register

Ports 0-1 Mode

Port 3 Mode

Port 2 Mode

T0 Prescaler

Timer/Counter0

T1 Prescaler

Timer/Counter1

Timer Mode

Serial I/O

General-Purpose

Registers

Port 3

Port 2

Port 1

Port 0

R254

R253

R252

R251

R250

R249

R248

R247

R246

R245

R244

R243

R242

R241

R240

R239

SPL

SPH

FLAGS

IMR

IRQ

IPR

P01M

P3M

P2M

PRE0

PRE1

TMR

SIO

Location

Identifiers

Expanded Register Group

Working Register Group

R253

Default Setting After Reset = 00000000

Note: Register Bank E0-EF can only be accessed through

working registers and indirect addressing modes.

Figure 19. Register Pointer Register

Figure 18. Register File

Z86C9620VSC Datasheet(PDF) 20 Page - Zilog, Inc.

Z86C9620VSC Datasheet(HTML) 20 Page - Zilog, Inc.

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46

Datasheet Download

Link URL