EZ80F91MCU Datasheet, PDF (317/396 Pages) Zilog, Inc. – eZ80Acclaim-TM Flash Microcontrollers

eZ80F91 MCU
Product Specification
298
Bit
Position
4
BRK_ADDR1
3
BRK_ADDR0
2
IGN_LOW_1
1
IGN_LOW_0
0
SINGLE_STEP
Value Description
0
The ZDI break, upon matching break address 1, is
disabled.
1
The ZDI break, upon matching break address 1, is
enabled.
0
The ZDI break, upon matching break address 0, is
disabled.
1
The ZDI break, upon matching break address 0, is
enabled.
0
The Ignore the Low Byte function of the ZDI Address
Match 1 registers is disabled. If BRK_ADDR1 is set to 1,
ZDI initiates a break when the entire 24-bit address,
ADDR[23:0], matches the 3-byte value {ZDI_ADDR1_U,
ZDI_ADDR1_H, ZDI_ADDR1_L}.
1
The Ignore the Low Byte function of the ZDI Address
Match 1 registers is enabled. If BRK_ADDR1 is set to 1,
ZDI initiates a break when only the upper 2 bytes of the
24-bit address, ADDR[23:8], match the 2-byte value
{ZDI_ADDR1_U, ZDI_ADDR1_H}. As a result, a break
can occur anywhere within a 256-byte page.
0
The Ignore the Low Byte function of the ZDI Address
Match 1 registers is disabled. If BRK_ADDR0 is set to 1,
ZDI initiates a break when the entire 24-bit address,
ADDR[23:0], matches the 3-byte value {ZDI_ADDR0_U,
ZDI_ADDR0_H, ZDI_ADDR0_L}.
1
The Ignore the Low Byte function of the ZDI Address
Match 1 registers is enabled. If the BRK_ADDR1 is set to
0, ZDI initiates a break when only the upper 2 bytes of the
24-bit address, ADDR[23:8], match the 2 bytes value
{ZDI_ADDR0_U, ZDI_ADDR0_H}. As a result, a break
can occur anywhere within a 256-byte page.
0
ZDI SINGLE STEP mode is disabled.
1
ZDI SINGLE STEP mode is enabled. ZDI asserts a break
following execution of each instruction.
PS019209-0504
PRELIMINARY
ZiLOG Debug Interface