ZLF645E0H2864G00TR Maxim Integrated, ZLF645E0H2864G00TR Datasheet - Page 63
![no-image](/images/no-image-200.jpg)
ZLF645E0H2864G00TR
Manufacturer Part Number
ZLF645E0H2864G00TR
Description
8-bit Microcontrollers - MCU Crimzon Flash Infrared MCU
Manufacturer
Maxim Integrated
Datasheet
1.ZLF645E0H4864G2204.pdf
(201 pages)
Specifications of ZLF645E0H2864G00TR
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
Package / Case
SSOP-28
Mounting Style
SMD/SMT
Interface Type
UART
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
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
START
Caution:
Figure 17. Interfacing the In-Circuit Programming Pin P34 with an RS-232 Interface (2)
ICP Data Format
ICP Auto-Baud Detector/Generator
The ICP interface uses the asynchronous data format defined for RS-232. Each character
is transmitted as 1 Start bit, 8 data bits (least significant bit first), and 1.5 Stop bits
(see
To run over a range of baud rates (data bits per second) with various system clock
frequencies, the ICP contains an Auto-Baud Detector/Generator. After a reset, the ICP is
non-active until it receives data. The ICP requires that the first character sent from the host
is character
data bits), framed between High bits. The Auto-Baud Detector measures this period and
sets the ICP Baud Rate Generator accordingly.
The Auto-Baud Detector/Generator is clocked by the system clock. The minimum baud
rate is the system clock frequency divided by 512. If the datastream can be synchronized
with the system clock, the auto-baud generator can run as high as the system clock
frequency divided by 2.
D0
RS-232 TX
RS-232 RX
For operation of the ICP, all power pins (V
and all ground pins (V
Figure
D1
18).
80H
. The character
D2
Figure 18. ICP Data Format
Transceiver
SS
RS-232
and AV
D3
80H
SS
) must be properly grounded.
has eight continuous bits Low (one Start bit plus 7
Open-Drain
D4
Buffer
DD
and AV
V DD
D5
10 K
DD
ZLF645 Series Flash MCUs
) must be supplied with power
D6
ICP Pin
Product Specification
ICP Interface Operation
D7
STOP
55
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