Z8F16800144ZCOG Zilog, Z8F16800144ZCOG Datasheet - Page 121

• Manufacturer Part Number: Z8F16800144ZCOG
• Description: KIT DEV FOR Z8F642 MCU 44 PIN
• Manufacturer: Zilog
• Series: Z8 Encore!®r
• Type: MCUr

Specifications of Z8F16800144ZCOG

• Contents: Hardware, Software and Documentation
• For Use With/related Products: Z8F642
• For Use With: 269-4661 - KIT ACC ETHERNET SMART CABLE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-4678

Table 52. Timer 0–2 High Byte Register (TxH)
Table 53. Timer 0–2 Low Byte Register (TxL)
Timer Control Register Definitions
PS025011-1010
BITS
FIELD
RESET
R/W
ADDR
BITS
FIELD
RESET
R/W
ADDR
Timer 0–2 High and Low Byte Registers
R/W
R/W
7
0
7
0
The Timer 0–2 High and Low Byte (TxH and TxL) registers
contain the current 16-bit timer count value. When the timer is enabled, a read from TxH
causes the value in TxL to be stored in a temporary holding register. A read from TxL
always returns this temporary register when the timers are enabled. When the timer is
disabled, reading from the TxL reads the register directly.
Writing to the Timer High and Low Byte registers when the timer is enabled is not
recommended. There are no temporary holding registers available for write operations, so
simultaneous 16-bit writes are not possible. If either the Timer High or Low Byte registers
are written during counting, the 8-bit written value is placed in the counter (High or Low
Byte) at the next clock edge. The counter continues counting from the new value.
TH and TL—Timer High and Low Bytes
These 2 bytes, {TH[7:0], TL[7:0]}, contain the current 16-bit timer count value.
R/W
R/W
6
0
6
0
R/W
R/W
5
0
5
0
P R E L I M I N A R Y
F00H, F08H, F10H
F01H, F09H, F11H
R/W
R/W
4
0
4
0
TH
TL
R/W
R/W
3
0
3
0
Z8 Encore! XP
R/W
R/W
2
0
2
0
(Table 52
Product Specification
R/W
R/W
and
1
0
1
0
®
F1680 Series
Table
53)
R/W
R/W
0
0
0
1
Timers
107