Z8F082AHH020SG2156 Zilog, Z8F082AHH020SG2156 Datasheet - Page 25

• Manufacturer Part Number: Z8F082AHH020SG2156
• Description: IC ENCORE XP MCU FLASH 8K
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F082AHH020SG2156

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: IrDA, UART/USART
• Peripherals: Brown-out Detect/Reset, LED, LVD, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 17
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: Q5278375

UM012811-0904
Linear Addressable
Register File
4096B
Figure 3. Register File Organization
Linear Addressing of the Register File
Using 12-bit linear addressing, the eZ8 CPU can directly access any 8-bit registers or 16-
bit register pairs within the 4096B Register File. The instructions that support 12-bit
addressing allow direct register access to most registers without requiring a change to the
value of the Register Pointer (RP). To accommodate the increase in the register address
space relative to the Z8
added to allow easier register access across page boundaries.
Page Mode Addressing of the Register File
In Page mode, the Register File is divided into sixteen 256-Byte register Pages. The cur-
rent page is determined by the Page Pointer value, RP[3:0]. Registers can be accessed by
Direct, Indirect, or Indexed Addressing using 8-bit addresses. The full 12-bit address is
given by {RP[3:0], Address[7:0]}. All 256 registers on the current page can be referenced
FFFH
000H
256B Pages
16
®
E
D
C
B
A
F
9
8
7
6
5
4
3
2
1
0
architecture, new Extended Addressing instructions have been
16B Working Register
Groups Per Page
16
E
D
C
B
A
F
9
8
7
6
5
4
3
2
1
0
Working Registers
Per Group
16
D
C
F
E
B
A
9
8
7
6
5
4
3
2
1
0
Address Space
User Manual
eZ8 CPU
15