EZ80190AZ050SC00TR Zilog, EZ80190AZ050SC00TR Datasheet - Page 46

• Manufacturer Part Number: EZ80190AZ050SC00TR
• Description: IC EZ80 ACCLAIM 50MHZ 100LQFP
• Manufacturer: Zilog

Specifications of EZ80190AZ050SC00TR

• Processor Type: eZ80
• Features: High Speed, Single-Cycle Instruction-Fetch
• Speed: 50MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

PS006614-1208
Note:
Timer Data Low Byte Register
Table 6. Timer Data Low Byte Register (TMR0_DR_L = 0081h, TMR0_DR_L = 0084h,
Timer Data High Byte Register
1
RST_EN
0
PRT_EN
Bit
Reset
CPU Access
Note: R = Read Only.
Bit
Position
[7:0]
TMR_DR_L
This Read Only register returns the Low byte of the current count value of the selected
timer. The Timer Data Low Byte register, listed in
in operation. Reading the current count value does not affect timer operation. To read the
16-bit data of the current count value, {TMRx_DR_H[7:0], TMRx_DR_L[7:0]}, first read
the Timer Data Low Byte register and then read the Timer Data High Byte register. The
Timer Data High Byte register value is latched when a read of the Timer Data Low Byte
register occurs.
The timer data registers and timer reload registers share the same address space.
This Read Only register returns the High byte of the current count value of the selected
timer. The Timer Data High Byte register, listed in
the timer is in operation. Reading the current count value does not affect timer operation.
To read the 16-bit data of the current count value, {TMRx_DR_H[7:0],
TMRx_DR_L[7:0]}, first read the Timer Data Low Byte register and then read the Timer
TMR0_DR_L = 0087h, TMR0_DR_L = 008Ah, TMR0_DR_L = 008Dh)
0
1
0
1
Value
00h–FFh These bits represent the Low byte of the 2-byte timer data
The automatic reload and restart function is disabled.
The automatic reload and restart function is enabled. When a 1
is written to RST_EN, the values in the reload registers are
loaded into the downcounter and the timer restarts.
The programmable reload timer is disabled.
The programmable reload timer is enabled.
R
7
0
Description
value, {TMRx_DR_H[7:0], TMRx_DR_L[7:0]}. Bit 7 is bit 7
of the 16-bit timer data value. Bit 0 is bit 0 least significant
bit (lsb) of the 16-bit timer data value.
R
6
0
R
5
0
R
4
0
Table
Table 7
R
3
0
6, can be read while the timer is
on page 37, can be read while
R
2
0
Programmable Reload Timers
Product Specification
R
1
0
R
0
0
eZ80190
36