Z8F6422AR020SC2104 Zilog, Z8F6422AR020SC2104 Datasheet - Page 219

• Manufacturer Part Number: Z8F6422AR020SC2104
• Description: IC ENCORE MCU FLASH 64K 64LQFP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F6422AR020SC2104

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 46
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 64-LQFP
• For Use With: 269-4678 - KIT DEV FOR Z8F642 MCU 44 PIN269-4677 - KIT DEV FOR Z8F642 MCU 28PIN269-4540 - KIT DEV FOR Z8 ENCORE 16K TO 64K
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: 269-3641

On-Chip Debugger Control Register Definitions
PS019921-0308
Table 102. OCD Control Register (OCDCTL)
BITS
FIELD
RESET
R/W
OCD Control Register
DBGMODE
7
The OCD Control register
register enters or exits DEBUG mode and enables the BRK instruction.
A ‘reset and stop’ function can be achieved by writing
go’ function can be achieved by writing
mode, a ‘run’ function can be implemented by writing
DBGMODE—DEBUG Mode
Setting this bit to 1 causes the device to enter DEBUG mode. When in DEBUG mode, the
eZ8 CPU stops fetching new instructions. Clearing this bit causes the eZ8 CPU to start
running again. This bit is automatically set when a BRK instruction is decoded and Break-
points are enabled. If the Read Protect Option Bit is enabled, this bit can only be cleared
by resetting the device, it cannot be written to 0.
0 = TheZ8 Encore! XP
1 = The Z8 Encore! XP
BRKEN—Breakpoint Enable
This bit controls the behavior of the BRK instruction (opcode 00H). By default, Break-
points are disabled and the BRK instruction behaves like a NOP. If this bit is set to 1 and a
BRK instruction is decoded, the OCD takes action dependent upon the BRKLOOP bit.
0 = BRK instruction is disabled.
1 = BRK instruction is enabled.
DBGACK—Debug Acknowledge
This bit enables the debug acknowledge feature. If this bit is set to 1, then the OCD sends
an Debug Acknowledge character (
0 = Debug Acknowledge is disabled.
1 = Debug Acknowledge is enabled.
BRKLOOP—Breakpoint Loop
This bit determines what action the OCD takes when a BRK instruction is decoded if
breakpoints are enabled (BRKEN is 1). If this bit is 0, then the DBGMODE bit is automat-
ically set to 1 and the OCD entered DEBUG mode. If BRKLOOP is set to 1, then the
eZ8 CPU loops on the BRK instruction.
BRKEN
R/W
6
DBGACK BRKLOOP
®
®
5
F64XX Series device is operating in NORMAL mode.
F64XX Series device is in DEBUG mode.
(Table
102) controls the state of the On-Chip Debugger. This
FFH
4
) to the host when a Breakpoint occurs.
41H
0
to this register. If the device is in DEBUG
3
R
40H
81H
Z8 Encore! XP
to this register.
to this register. A ‘reset and
2
Product Specification
Reserved
1
®
On-Chip Debugger
F64XX Series
RST
R/W
0
205