Z86E4412VSG Zilog, Z86E4412VSG Datasheet - Page 35

• Manufacturer Part Number: Z86E4412VSG
• Description: IC MICROCONTROLLER 16K 44-PLCC
• Manufacturer: Zilog
• Series: Z8®r

Specifications of Z86E4412VSG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 12MHz
• Connectivity: EBI/EMI
• Peripherals: POR, WDT
• Number Of I /o: 32
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: OTP
• Ram Size: 236 x 8
• Voltage - Supply (vcc/vdd): 3.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-LCC (J-Lead)
• Processor Series: Z86E4xx
• Core: Z8
• Data Bus Width: 8 bit
• Data Ram Size: 237 B
• Maximum Clock Frequency: 12 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 2
• Operating Supply Voltage: 3.5 V to 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: Z86E4400ZDV, Z86E4400ZDP, Z86E4400ZDF, Z86E3400ZDV, Z86E3400ZDS, Z86E3400ZDP, Z86C4001ZDV
• Minimum Operating Temperature: 0 C
• For Use With: 309-1042 - ADAPTER 44-PLCC ZIF TO 44-PLCC309-1041 - ADAPTER 44-PLCC TO 44-PLCC309-1038 - ADAPTER 44-PLCC ZIF TO 40-DIP309-1037 - ADAPTER 44-PLCC TO 40-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details
• Other names: 269-3981; Z86E4412VSG

Zilog
Register File. The register file consists of three I/O port
registers, 236/125 general-purpose registers, 15 control
and status registers, and three system configuration regis-
ters in the expanded register group. The instructions can
access registers directly or indirectly through an 8-bit ad-
dress field. This allows a short 4-bit register address using
the Register Pointer (Figure 24). In the 4-bit mode, the reg-
Expanded Register File (ERF). The register file has been
expanded to allow for additional system control registers,
mapping of additional peripheral devices and input/output
ports into the register address area. The Z8 register ad-
dress space R0 through R15 is implemented as 16 groups
of 16 registers per group (Figure 26). These register banks
are known as the Expanded Register File (ERF).
DS97Z8X1500
R253 RP
Default After Reset = 00H
D7 D6 D5 D4 D3 D2 D1 D0
Figure 24. Register Pointer Register
P R E L I M I N A R Y
ister file is divided into 16 working register groups, each
occupying 16 continuous locations. The Register Pointer
addresses the starting location of the active working-regis-
ter group.
Note: Register Group E0-EF can only be accessed
through working register and indirect addressing modes.
The low nibble (D3-D0) of the Register Pointer (RP) select
the active ERF Bank, and the high nibble (D7-D4) of regis-
ter RP select the working register group. Three system
configuration registers reside in the Expanded Register
File at bank FH: PCON, SMR, and WDTMR. The rest of
the Expanded Register is not physically implemented and
is reserved for future expansion.
Expanded Register Bank
Working Register Pointer
CMOS Z8 OTP Microcontrollers
Z86E33/733/E34/E43/743/E44
35
1