ez80190 ZiLOG Semiconductor, ez80190 Datasheet - Page 50

• Manufacturer Part Number: ez80190
• Description: Ez80190 Microprocessor
• Manufacturer: ZiLOG Semiconductor

PS006613-0306
1
RST_EN
0
PRT_EN
Bit
Reset
CPU Access
Note: R = Read Only.
Bit
Position
[7:0]
TMR_DR_L
Note:
Timer Data Low Byte Register
This Read Only register returns the Low byte of the current count value of the
selected timer. The Timer Data Low Byte register, detailed in
while 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 Data High Byte register. The Timer Data High Byte regis-
ter value is latched when a read of the Timer Data Low Byte register occurs.
Timer Data High Byte Register
This Read Only register returns the High byte of the current count value of the
selected timer. The Timer Data High Byte register, detailed in
while 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
TMR0_DR_L = 0087h, TMR0_DR_L = 008Ah, TMR0_DR_L = 008Dh)
0
1
0
1
The timer data registers and timer reload registers share the same
address space.
Value
00h–FFh These bits represent the Low byte of the 2-byte timer data
(TMR0_DR_L = 0081h, TMR0_DR_L = 0084h,
Table 6. Timer Data Low Byte Register
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 (lsb) of the 16-
bit timer data value.
R
6
0
PRELIMINARY
R
5
0
R
4
0
R
3
0
eZ80190 Product Specification
R
2
0
Programmable Reload Timers
Table
Table
R
1
0
6, can be read
7, can be read
R
0
0
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