ZLF645S2864GP0001T Maxim Integrated, ZLF645S2864GP0001T Datasheet - Page 120
ZLF645S2864GP0001T
Manufacturer Part Number
ZLF645S2864GP0001T
Description
8-bit Microcontrollers - MCU Crimzon Flash Infrared MCU
Manufacturer
Maxim Integrated
Datasheet
1.ZLF645E0H4864G2204.pdf
(201 pages)
Specifications of ZLF645S2864GP0001T
Core
Z8
Data Bus Width
8 bit
Maximum Clock Frequency
8 MHz
Program Memory Size
64 KB
Data Ram Size
1 KB
Operating Supply Voltage
2 V to 3.6 V
Interface Type
UART
Number Of Programmable I/os
5
Number Of Timers
2 x 8 bit, 1 x 16 bit
Processor Series
ZLF645
Program Memory Type
Flash
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19-4572; Rev 0; 4/09
Timer Output
Initiating PING-PONG Mode
First, ensure that both counter/timers are not running.
Follow the steps below to initiate the PING-PONG mode:
1. Set T8 into SINGLE-PASS mode (CTR0, bit 6)
2. Set T16 into SINGLE-PASS mode (CTR2, bit 6)
3. Set the PING-PONG mode (CTR1 bits [3:2])
4. Finally, start PING-PONG mode by enabling either T8 (CTR0, D7) or T16 (CTR2,
If you stop the timer and restart the timer, reload the initial value to avoid an unknown
previous value.
During PING-PONG Mode
The enable bits of T8 and T16 (CTR0, D7; CTR2, D7) are set and cleared alternately by
hardware. The time-out bits (CTR0, bit 5; CTR2, bit 5) are set every time the counter/
timers reach the terminal count.
The output logic for the timers is displayed in
T8_OUT when bit 0 of CTR0 is set. P35 is used to output the value of T16_OUT when bit
Enable
Enable
These instructions are not consecutive and can occur in random order.
D7). The initial value of T8 or T16 must not be
TC8
TC16
Time-out
Figure 38. PING-PONG Mode Diagram
Time-out
Figure 39
1
.
on page 113. P34 is used to output
ZLF645 Series Flash MCUs
Counter/Timer Functional Blocks
Product Specification
Ping-Pong
CTR1 data bits [3:2]
112
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