EZ80F920120MOD Zilog, EZ80F920120MOD Datasheet - Page 59

• Manufacturer Part Number: EZ80F920120MOD
• Description: MODULE EZ80F92 512K 20MHZ
• Manufacturer: Zilog

Specifications of EZ80F920120MOD

• Module/board Type: Development Module
• Processor Series: EZ80F92x
• Core: eZ80
• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 1 MB
• Interface Type: Cable
• Maximum Clock Frequency: 20 MHz
• Operating Supply Voltage: 0 V to 3.3 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: LQFP
• Development Tools By Supplier: eZ80F920200ZCOG
• Minimum Operating Temperature: 0 C
• For Use With/related Products: eZ80F92
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3157; EZ80F920120MOD

Interrupt Controller
PS015308-0404
Maskable Interrupts
The interrupt controller on the eZ80F92 device routes the interrupt request signals from
the internal peripherals and external devices (via the GPIO pins) to the CPU.
On the eZ80F92 device, all maskable interrupts use the CPU’s vectored interrupt function.
Interrupt Vector Sources by Priority lists the low-byte vector for each of the maskable
interrupt sources. The maskable interrupt sources are listed in order of priority, with vector
00h
ing address {I[7:0], IVECT[7:0]} where I[7:0] is the CPU’s Interrupt Page Address Regis-
ter.
Table 11. Interrupt Vector Sources by Priority
The user’s program should store the starting address of the interrupt service routine (ISR)
in the two-byte interrupt vector locations. For example, for ADL mode the two-byte
address for the SPI interrupt service routine would be stored at {
Note: Absolute locations 00h, 08h, 10h, 18h, 20h, 28h, 30h, 38h, and 66h are reserved for hardware
Vector
0Ah
0Ch
0Eh
00h
02h
04h
06h
08h
10h
12h
14h
16h
18h
being the highest-priority interrupt. The full 16-bit interrupt vector is located at start-
reset, NMI, and the RST instruction.
Unused
Unused
Unused
Unused
UART 0
Source
PRT 0
PRT 1
PRT 2
PRT 3
PRT 4
PRT 5
Flash
RTC
Vector
1Ah
1Ch
1Eh
2Ah
2Ch
2Eh
20h
22h
24h
26h
28h
30h
32h
P R E L I M I N A R Y
UART 1
Port B 0
Port B 1
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Source
SPI
I
2
C
Vector
3Ch
4Ch
3Ah
3Eh
4Ah
34h
36h
38h
40h
42h
44h
46h
48h
Port C 0
Port C 1
Port C 2
Port C 3
Port C 4
Port C 5
Port C 6
Port B 2
Port B 3
Port B 4
Port B 5
Port B 6
Port B 7
Source
Product Specification
00h
, I[7:0], 1Eh} and
Vector
eZ80F92/eZ80F93
5Ch
4Eh
5Ah
5Eh
50h
52h
54h
56h
58h
60h
62h
64h
66h
Interrupt Controller
Port C 7
Port D 0
Port D 1
Port D 2
Port D 3
Port D 4
Port D 5
Port D 6
Port D 7
Source
Unused
Unused
Unused
Unused
47