ZLF645E0Q2064G Zilog, ZLF645E0Q2064G Datasheet - Page 71

• Manufacturer Part Number: ZLF645E0Q2064G
• Description: IC MCU 64K FLASH 1K RAM 20-QFN
• Manufacturer: Zilog
• Series: Crimzon™ ZLFr

Specifications of ZLF645E0Q2064G

• Core Processor: Z8 LXMC
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, WDT
• Number Of I /o: 16
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.9 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Oscillator Type: -
• Other names: 269-4723

Table 32. TEST Mode Register (TESTMODE)
Exiting ICP Mode
PS026407-0408
Bit Position
[7:3]
[2]
[1:0]
Bits
Field
Reset
R/W
TEST Mode Register
R/W
7
0
The TEST Mode register is used to enable various device test or Flash memory access
modes. At present this register only provides configuration for a single mode where, once
programmed, Flash memory accesses bypass the devices Flash Controller and are done
through the devices I/O pins. A complete description of this mode is available in the Flash
Byte Programming section. This register can only be read or written using the ICP Read/
Write Test Mode Register commands.
The ZLF645 MCU is taken out of ICP mode under any of the following conditions:
•
•
Value
Initiating a POR with P36 held High during the entire reset period.
Lowering V
—
—
1
0
R
6
0
Description
Reserved — Must be written to 1. Reads return 0.
Flash Controller Bypass Mode
The device is not in Flash Controller Bypass Mode.
The device is in Flash Controller Bypass mode.
Reserved —Must be written to 1. Reads return 0.
DD
Reserved
until the ZLF645 MCU reaches a Voltage Brownout reset state.
R
5
0
R
4
0
R
3
0
Flash Controller
Bypass Mode
R/W
2
0
ZLF645 Series Flash MCUs
Product Specification
R
1
0
Reserved
Exiting ICP Mode
R
0
0
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