Z8F042AHH020EG Zilog, Z8F042AHH020EG Datasheet - Page 172

• Manufacturer Part Number: Z8F042AHH020EG
• Description: IC ENCORE XP MCU FLASH 4K 20SSOP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F042AHH020EG

• 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: 4KB (4K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• 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: -40°C ~ 105°C
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-4156; Z8F042AHH020EG

Table 83. Flash Control Register (FCTL)
Flash Control Register Definitions
PS022517-0508
BITS
FIELD
RESET
R/W
ADDR
Flash Controller Behavior in Debug Mode
Flash Control Register
7
The following changes in behavior of the Flash Controller occur when the Flash Control-
ler is accessed using the OCD:
•
•
•
•
•
•
•
The Flash Control Register
ming and erase operations, or to select the Flash Sector Protect Register. The Write-only
Flash Control Register shares its Register File address with the Read-only Flash Status
Register.
FCMD—Flash Command
73H = First unlock command.
8CH = Second unlock command.
95H = Page erase command.
63H = Mass erase command
5EH = Flash Sector Protect Register select.
* All other commands, or any command out of sequence, lock the Flash Controller.
The Flash Write Protect option bit is ignored
The Flash Sector Protect Register is ignored for programming and erase operations
Programming operations are not limited to the page selected in the Page Select
Register
Bits in the Flash Sector Protect Register can be written to 1 or 0
The second write of the Page Select Register to unlock the Flash Controller is not
necessary
The Page Select Register is written when the Flash Controller is unlocked
The Mass Erase command is enabled
6
5
(Table
83) is used to unlock the Flash Controller for program-
4
FCMD
FF8H
W
0
3
Z8 Encore! XP
2
Product Specification
1
®
F0822 Series
Flash Memory
0
159