EZ80F920120MOD Zilog, EZ80F920120MOD Datasheet - Page 93

• 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

Table 30. PRT CONTINUOUS Mode Operation Example
PS015308-0404
PRT Count
(Clock ÷ 4)
PRT Clock
Interrupt
Request
IOWRN
Value
CLK
Table 31. PRT CONTINUOUS Mode Operation Example
Reading the Current Count Value
The CPU is capable of reading the current count value while the timer is running. This
Read event does not affect timer operation. The High byte of the current count value is
latched during a Read of the Low byte.
Timer Interrupts
The timer interrupt flag, PRT_IRQ, is set to 1 whenever the timer reaches its end-of-count
value,
TINUOUS mode. The interrupt flag is only set when the timer reaches
from
0000h
The CPU can be programmed to poll the PRT_IRQ bit for the time-out event. Alterna-
tively, an interrupt service request signal can be sent to the CPU by setting IRQ_EN to 1.
Parameter
PRT Enabled
Reload and Restart Enabled
PRT Clock Divider = 4
CONTINUOUS Mode
PRT Interrupt Enabled
PRT Reload Value
0001h
0000h
, which selects the maximum time-out period.
. The timer interrupt flag is not set to 1 when the timer is loaded with the value
X
, in SINGLE PASS mode, or when the timer reloads the start value in CON-
I/O Write to TMRx_CTL Enables PRT
4
P R E L I M I N A R Y
3
Control Register(s)
TMRx_CTL[0]
TMRx_CTL[1]
TMRx_CTL[3:2]
TMRx_CTL[4]
TMRx_CTL[6]
{TMRx_RR_H, TMRx_RR_L}
2
1
Programmable Reload Timers
Product Specification
4
eZ80F92/eZ80F93
0000h
Value
1
1
00b
1
1
0004h
3
(or reloads)
81